Holotype female, China: Henan Province, Lushi County, Yuhuangshan National Forest Park, 1720 m, 33°44.46'N, 110°49.900'E, 30 April 2019, leg. Shuxin Liu, Yiwen Zhang, (ASMN).

The species is similar to A. nanjingensis Yan & Wei sp. nov., but it differs from the latter in the following characters: the antennomere 3 shorter than longest axis of eye; malar space as long as the basal 2 antennomeres together; the anterior smoky stripe of the fore wing not extending to apex; head with the dorsal black macula broadly touching eyes laterally; posterior of the postocellar area distinctly concave at the middle; the fourth abdominal tergum yellowish brown; the bottom of the posterior incision of the first tergum broadly truncate; the dorsum of mesoscutellum sparsely punctured, the surface smooth; and the first annulus of lance 2.7× as high as long.

Holotype, female. Body length 16 mm (Fig. 3A).

Color. Head dark yellowish brown (Fig. 3C), dorsum with a large quadrate black macula covering inner orbit, frontal area and ocellar area (Fig. 3D), antenna dark reddish brown (Fig. 3F); thorax black (Fig. 3G), posterior margin of pronotum and anepimeron, tegula, mesoscutellum and lateral carina, small macula on posterior of mesepisternum, lower margin of metepisternum and metepimeron largely orange brown (Fig. 3B); lateral carina of metanotum and cenchri yellowish brown; abdomen brownish black, tergum 4 except for narrow middle macula yellowish brown, lateral margins of tergum 1, terga 5–10 and sternum 7 brown (Fig. 3I, J). Wings largely infuscate, cells 2Rs, 3Rs, 2M, 3M, 2Cu and 2A largely hyaline, veins largely brown to pale brown (Fig. 3A); legs reddish brown, middle and hind coxae, all trochanters and femora black, tibiae blackish brown, tarsi paler toward apex (Fig. 3E).

Head. Clypeus smooth with luster, anterior margin with broad and arcuate incision (Fig. 3C); malar space about 2.3× diameter of middle ocellus; postocellar area 1.6× as broad as long, clearly concave in middle at posterior margin, lateral furrows narrow weakly divergent; POL: OOL: OCL = 5: 6: 8; head behind eyes distinctly enlarged (Fig. 3D). Antenna about 1.5× head breadth (Fig. 3F), apical club 1.1× as long as antennomere 3, with the widest breadth about 2.6× apical breadth of antennomere 3, antennomere 3 slightly shorter than longest axis of eye.

Thorax. Mesonotum with dense and deep punctures, punctures on mesepisternum above carina and elevated parts of mesepimeron dense and deep, clearly defined, interspace between punctures almost smooth, concave area of mesepimeron microsculptured, punctures on ventral side of mesepisternum sparse (Fig. 3B); mesoscutellum roundly elevated, without middle furrow; oblique middle carina on mesepisternum clear but not sharp; distance between cenchri about 3× longest axis of a cenchrus (Fig. 3G).

Abdomen. Abdominal tergum 1 distinctly punctured and microsculptured, with very weak luster, other terga finely and densely microsculptured, almost matte; lateral carina of tergum 1 distinct, anterior corner round, posterior corner weakly produced; posterior margin of tergum 1 with broad and deep incision, bottom almost truncate (Fig. 3I); middle process of sternum 7 broad and triangular, basal breadth about 1/3 breadth of sternite 7; lance short and broad, subapical annuli feebly broadened, total length of annuli 3.6× height of 13^th annulus, first annulus 2.7× as high as broad (Fig. 3K); lancet with 42 serrulae (Fig. 3K), middle serrulae small, distinctly narrowed toward blunt apex, each side with about 5 minute subbasal teeth, distance between serrulae about 2.3× basal breadth of a serrula (Fig. 3H).

Male. Unknown.

China (Henan).

Unknown.

The specific epithet of the species name is a combination of the Latin word “concavi-” and “-caputus”, referring to the posteriorly concave postocellar area at middle.

Holotype female, China: Liaoning Province, Shenyang City, Dongling 23 May 1989, leg. Meicai Wei (ASMN).

This species is quite similar to A. eous (Semenov, 1935) and A. maculotegularis Yan & Wei sp. nov., but differs from the latter two species by the following characters: the black macula on dorsum of head small and not subquadrate, frontal ridges pale; mesepisternum entirely black; the apical margin of fore wing with narrow smoky macula; mesoscutellum roundly elevated without middle furrow; lancet with 48 serrulae, serrulae distinctly narrowed toward apex, distance between middle serrulae about 1.5× breadth of serrula; lance slender, the subapical part not broadened, and the first annulus 2.1× as high as long.

Holotype, female. Body length 21 mm (Fig. 4A).

Color. Head dark yellowish brown, frontal area with a M-shaped narrow black maculae, clypeus and mouthparts largely yellowish brown (Fig. 4E), antenna reddish brown (Fig. 4D); thorax largely black, narrow posterior and lateral margins of pronotum, tegula, mesoscutellum, dorsum of metascutellum, narrow posterior margin of mesopleuron yellowish brown (Fig. 4G, H); abdomen dark yellowish brown, terga 1–2 entirely, tergum 3 except for lateral small macula, subtriangular middle macula on tergum 4 and narrow basal margin of tergum 5 black, lateral macula on terga 7–8 and most of ventral fold of terga 2–6 blackish brown (Fig. 4A, L), pale maculae at middle of terga 6–8 3× broader than long. Wings smoky, outer margin of fore wing with a narrow and weak smoky macula (Fig. 4C), cells 3Rs, 2M, 3M, 1Cu, 2Cu and A largely subhyaline, veins and pterostigma pale brow; legs largely yellowish brown, coxae with black longitudinal stripes, trochanters and femora largely blackish brown.

Figure 4. 

Asicimbex dengi Yan & Wei sp. nov., holotype, female A female adult in dorsal view B claw C fore wing D antenna E head in front view F head in dorsal view G thoracic notum H mesopleuron and metapleuron I hind tarsus J lance K lancet L lateral side of abdomen M middle serrulae.

Head. Dorsum of head with indistinct and minute punctures, clypeus largely smooth, with strong luster (Fig. 4E, F). Clypeus elevated, anterior margin narrowly and roundly incised; labrum small and triangular; malar space 1.7× diameter of middle ocellus (Fig. 4E); postocellar area 2.0× broader than long, middle furrow weak; lateral furrows distinct, slightly divergent backwards; POL: OOL: OCL = 3 : 4: 6; eyes behind head distinctly enlarged (Fig. 4F). Antenna 1.6× head breadth, club broad and long, with widest breadth 2.2× apical breadth of antennomere 3, about 1.1× as long as antennomere 3, antennomere 3 as long as longest axis of eye.

Thorax. Punctures on mesoscutal middle and lateral lobes small and dense, surface weakly microsculptured; scutellum roundly elevated without middle furrow, punctures minute and sparse, top area smooth; distance between inner margin of cenchri 2.1× longest axis of a cenchrus (Fig. 4G); mesopleuron with a sharp oblique carina, punctures above carina dense and small, interspaces between punctures distinctly microsculptures (Fig. 4H); punctures on area below carina sparser.

Abdomen. Abdominal tergum 1 with minute punctures and microsculptured, other terga finely and densely microsculptured. Tergum 1 with obtuse and roundly curved lateral carina, posterior incision broad and not very deep, bottom round, middle depth about half the length of tergum (Fig. 4A); middle process of sternum 7 broad and triangular, basal breadth about 1/3 breadth of sternite 7; apical margin of ovipositor sheath obliquely truncate in lateral view, lower margin round (Fig. 4L); lance long and slender, subapical annuli not broadened, total length of annuli 5× height of 13^th annulus, first annulus 2.1× as high as broad (Fig. 4J); lancet with 48 serrulae (Fig. 4K), middle serrulae weakly narrowed toward truncate apex, each side with 3–4 large subbasal teeth, distance between middle serrulae 1.5× basal breadth of serrulae (Fig. 4M).

Male. Unknown.

China (Liaoning).

Unknown.

Holotype , female, China: Gansu Province, Tianshui City, 2 May 2000, leg. Xingyu Wu (NAFU). Paratypes, 1 female, same data as holotype (NAFU); 2 females, same data as holotype (ASMN).

This species is remote from other known species of the genus. It can be easily recognized by the following characters: the lateral margins of abdominal tergum 1 round, without distinct lateral carina (Fig. 5G, H), lateral area of tergum 1 with a distinct smooth and shiny patch; mesepisternum with an obscure middle transverse carina (Fig. 5B); the abdominal terga 3–5 with gradually elongated shiny yellow macula, the middle pale maculae on terga 6 and 7 less than 2× as broad as long and much shorter than lateral blackened part; fore wing with a broad and distinct smoky apical macula; the mesoscutal middle and lateral lobes with small pale maculae, antennomere 3 distinctly shorter than longest axis of eyes.

Figure 5. 

Asicimbex elminus (Li & Wu, 2003) comb. nov., paratype, female A female adult in dorsal view B mesopleuron and metapleuron C head in dorsal view D antenna E head in front view F thoracic notum G abdominal terga H lateral side of abdomen I lance J lancet K hind tarsus L middle serrulae M claw.

Holotype, female. Body length 19 mm (Fig. 5A).

Color. Head dark yellowish brown, lateral fovea, bottom of middle fovea, middle of frontal area and ocellar area black, clypeus yellowish brown (Fig. 5C, E); antennal flagellum reddish brown (Fig. 5D); thorax black (Fig. 5F), pronotum largely, tegula, narrow margins of mesoscutal middle lobe, small triangular maculae on inner side of lateral lobes, mesoscutellum and dorsum of metascutellum, posterior stripe of mesepisternum and of mesepimeron yellowish brown (Fig. 5B, F); abdomen black, both sides and connected posterior margin of abdominal tergum 1, a round macula on middle of tergum 6, a quadrate macula on terga 7 and 8 yellowish brown, a small macula on lateral of tergum 3, more than 1/4 of tergum 4 laterally, tergum 5 except for small middle macula, sides of abdominal sternites 2–6 bright yellow, middle of abdominal sternite blackish brown, terga 9–10 and ovipositor sheath reddish brown (Fig. 5G, H). Wings infuscate in anterior half and broad apical margin, veins and pterostigma yellowish brown, cells 2M, basal half of 3M, 1Cu, 2Cu, 2A largely and hind wing except for apical margin subhyaline (Fig. 5A). Legs yellowish brown, middle and hind coxae, trochanter and dorsal parts of femora blackish brown (Fig. 5H).

Head. Dorsum of head with fine punctures, clypeus smooth (Fig. 5E); clypeus elevated, anterior margin with a roundish incision; labrum small and roundish at apex, longer than broad; malar space 2.3× diameter of middle ocellus (Fig. 5E); postocellar area slightly elevated, 2× broader than long, middle furrow weak; lateral furrows distinct, parallel to each other; POL: OOL: OCL = 4: 5: 6; head behind eyes weakly enlarged (Fig. 5C). Antenna 1.5× head breadth, club 1.1× length of antennomere 3, widest breadth 2.5× apical breadth of antennomere 3 (Fig. 5D); antennomere 3 distinctly shorter than longest axis of eyes (32: 39).

Thorax. Mesonotum densely punctured, with feeble luster; punctures on metapleuron above carina dense and small, interspace between punctures microsculptured, lower part of mesosternum densely punctured, oblique carina obtuse (Fig. 5B); mesoscutellum strongly elevated, without furrow, dorsum sparely punctured; distance between inner margin of cenchri 2.5× the longest axis of a cenchrus; metascutellum not elevated in middle (Fig. 5F).

Abdomen. Abdominal tergum 1 with minute punctures and microsculptures, shiny, both sides smooth; other terga finely and densely microsculptured, with feeble luster (Fig. 5G). Tergum 1 with obtuse and roundish lateral carina, posterior margin broadly and roundly incised, middle depth of incision about 0.6× lateral length of tergum (Fig. 5G); middle process of sternum 7 narrow and triangular, basal breadth about 1/6 breadth of sternite 7; lance long and slender, subapical annuli clearly broadened, total length of annuli 6× height of 13^th annulus, first annulus 1.7× as high as broad (Fig. 5I); lancet with 48 serrulae (Fig. 5J), middle serrulae weakly narrowed toward truncate apex, each side with 3–4 large subbasal teeth, distance between middle serrulae 2.3× basal breadth of serrulae (Fig. 5L).

Male. Unknown.

China (Gansu, Shanxi).

Ulmus spp. (Yang and Wu 1998; Wu et al. 2001).

Li and Wu (Li and Wu 2003) placed this species in Agenocimbex. The external structure, male genitalia and female lancet all support the species as a member of Asicimbex. So a new combination is proposed for the species.

Yang and Wu (Yang and Wu 1998) recorded Cimbex japonica Kirby from middle Shanxi, China and reported the biology of the species in detail. However, the identification of the species was not correct. Based on the figure in the paper, the species is undoubtedly Asicimbex elminus (Li & Wu, 2003).

1 female, Якoвлoвка Сцас. у. Усср, кр, 23 May 1926, Дъякoнв Филинпъев; Agenocimbex eoa Sem., ♀, Gussakovskij, det.; Asicimbex eous (Semenov, 1935), Det. M.C. Wei, 2022 (Fig. 6K) (NHRS).

Figure 6. 

Asicimbex eous (Semenov, 1935) comb. nov., paratype, female A female adult in dorsal view (red arrow denotes outer margin of fore wing without narrow smoky maculae) B head in dorsal view C antenna D head in front view E claw F ovipositor sheath in lateral view G ovipositor sheath in ventral view (green arrow denotes middle process of sternum 7 narrow triangular) H mesopleuron and metapleuron I thoracic notum (purple arrow denotes scutellum with a broad and deep longitudinal furrow occupying middle 1/4) J spur in hind tibia K label L lancet M abdominal terga (blue arrow denotes lateral carina of abdominal tergum 1 obtuse, anterior corner blunt) N middle serrulae (orange arrow denotes pattern of subbasal teeth, distance between middle serrulae 2.6× basal breadth of serrulae).

A. eous (Semenov, 1935) is close to A. maculotegularis Yan & Wei sp. nov., but differs from the latter by the following characters: tegula entirely yellow brown; the lateral side of the first abdominal tergum black; the 4^th abdominal tergum with a large middle black macula; the middle and hind tibiae yellowish brown; the middle of first abdominal tergum not produced; the female lancet with 55 serrulae, distance between the middle serrulae 2.6× basal breadth of serrulae.

Not type, female. Body length 16–18 mm (Fig. 6A).

Color. Head brown, dorsum with a quadrate black macula covering ocellar area, frons, inner half of inner orbit, lateral and middle foveae, clypeus and mouthparts largely yellow brown (Fig. 6D), antenna dark reddish brown (Fig. 6C); thorax black, pronotum largely, tegula, mesoscutellum, dorsum of metascutellum, posterior half of mesepisternum and of katepimeron, posterior stripe of metapleuron yellowish brown (Fig. 6H); abdomen yellowish brown, dorsal side of terga 1–3 black, broad middle macula on tergum 4 black and laterally yellow brown, tergum 5 yellow brown except for a small triangular macula at middle anteriorly, lateral part of terga 6–8 dark brown, pale macula at middle of terga 6–8 of gradually shortened (Fig. 6M); fore wing smoky, outer margin of fore wing without narrow smoky maculae, cells 3Rs, 2M, 3M, 1Cu, 2Cu and 2A largely subhyaline, veins and pterostigma pale brown; hind wing very feebly infuscate; legs largely yellowish brown, middle and hind coxae, trochanters and femora largely black (Fig. 6A).

Head. Dorsum of head with minute punctures, clypeus smooth, with strong luster (Fig. 6B, D). Clypeus elevated, anterior margin roundly incised; labrum small and triangular, slightly longer than broad; malar space 2× diameter of middle ocellus; postocellar area 2.1× broader than long, middle furrow weak; lateral furrows distinct, divergent backwards; POL: OOL: OCL = 3 : 5: 6; head behind eyes weakly enlarged (Fig. 6B). Antenna 1.4× head breadth, club breadth 2.3× apical breadth of antennomere 3, club length 1.2× as long as antennomere 3 (Fig. 6C), antennomere 3 as long as longest axis of eye.

Thorax. Mesonotum densely punctured (Fig. 6I); scutellum strongly elevated, sparsely and minutely punctured, with a broad and deep longitudinal furrow occupying middle 1/4; mesepisternum above carina densely punctured mixed with microsculptures, oblique carina on mesopleuron sharp, mesepimeron largely polished, shiny (Fig. 6H); cenchri narrow, distance between inner margin of cenchri 2.5× the longest axis of a cenchrus (Fig. 6I).

Abdomen. Abdominal tergum 1 minutely punctured mixed with microsculptures, without lateral smooth patch; lateral carina obtuse, anterior corner blunt but distinct, posterior corner roundish; posterior margin with broad and deep incision, bottom round (Fig. 6I, M); middle process of sternum 7 narrow and triangular, basal breadth about 1/6 breadth of sternite 7; lance long and slender, subapical annuli clearly broadened, total length of annuli 5× height of 13^th annulus, first annulus 1.8× as high as broad (Fig. 6L); lancet with 56 annuli and 55 serrulae (Fig. 6L), middle serrulae weakly narrowed toward truncate apex, each side with 4–5 large subbasal teeth, distance between middle serrulae 2.6× basal breadth of serrulae (Fig. 6N).

Male. Unknown.

Russia (Ussuri, Vladivostok).

Unknown.

Holotype , female, South Korea: [GG] Hwaseong-gun, 24 May 1992, H. J. Lee (YNU). Paratypes, 4 females and 1 male, data as holotype.

A. koreanus Yan & Wei sp. nov. is quite close to A. malaisei (Gussakovskij, 1947) comb. nov. from Ussuri of Russia. It differs from the latter by the following characters: the apical club of antenna longer than antennomere 3 and about 1.6× as long as antennomeres 4 and 5 together; cenchrus very narrow and about 4× as long as broad; the dorsum of mesoscutellum densely punctured; the upper half of mesepisternum densely punctured mixed with wrinkles; the lateral carina of the first abdominal tergum roundly curved, the anterior corner not angulate; the apex of the middle process of the seventh sternum acute; the black macula on dorsum of head not subquadrate, with three processes; the apical margin of fore wing without smoky macula; lancet with 56 serrulae, the distance between middle serrulae broader than 2× breadth of a serrula.

Holotype, female. Body length 21 mm (Fig. 7A).

Color. Head and antenna yellowish brown, dorsum with a M-shaped black macula, clypeus and mouthparts largely yellow brown (Fig. 7C, E); thorax largely black, narrow posterior margin and broad lateral margin of pronotum, anterior part of tegula, mesoscutellum, dorsum of metascutellum, posterior 3/4 of mesepisternum above carina and posterior half of katepimeron, metepisternum largely yellowish brown (Fig. 7F); abdomen yellowish brown, dorsal side of terga 1–3 entirely, broad triangular middle macula on tergum 4 and narrow basal margin of tergum 5 black, narrow lateral margin of tergum 1, tergum 4 except for middle triangular macula, tergum 5 almost entirely, broad quadrate middle macula on terga 6–8 pale yellow brown, lateral part of terga 6–8 dark brown (Fig. 7G, H), sterna largely dark brown (Fig. 7I); fore wing distinctly infuscate, outer margin of fore wing without narrow smoky maculae, cells 2Rs, 3Rs, 2M, 3M, 1Cu, 2Cu and 2A largely subhyaline, veins and pterostigma pale brow; hind wing very feebly infuscate; legs largely yellowish brown, middle and hind coxae, trochanters and femora largely black, tarsi yellowish white (Fig. 7A, J).

Figure 7. 

Asicimbex koreanus Yan & Wei sp. nov., holotype, female A female adult in dorsal view B thoracic notum C head in dorsal view D antenna E head in front view F mesopleuron and metapleuron G abdominal terga H lateral side of abdomen I ovipositor sheath in ventral view J tibia and tarsus K claw L lancet M middle serrulae.

Head. Dorsum of head with minute punctures, clypeus smooth, with strong luster (Fig. 7C, 7E). Clypeus elevated, anterior margin roundly incised; labrum as long as broad, apex round; malar space 1.7× diameter of middle ocellus; postocellar area 2× broader than long, middle furrow weak; lateral furrows distinct, feebly divergent backwards; POL: OOL: OCL = 3 : 5: 6; head behind eyes weakly enlarged (Fig. 7C). Antenna 1.6× head breadth, club breadth 2.2× apical breadth of antennomere 3, club length 1.1× as long as antennomere 3 and 1.6× combined length of antennomeres 4 and 5 (Fig. 7D), antennomere 3 as long as longest axis of eye.

Thorax. Mesonotum minutely and densely punctured (Fig. 7B); scutellum roundly elevated without middle furrow, dorsum densely punctured; mesepisternum above carina densely and minutely punctured mixed with microsculptures, oblique carina on mesopleuron sharp, mesepimeron largely polished, shiny (Fig. 7F); cenchri very narrow and about 4× as long as broad, distance between inner margin of cenchri 2.8× longest axis of a cenchrus (Fig. 7B).

Abdomen. Abdominal tergum 1 minutely punctured mixed with microsculptures, without lateral smooth patch; lateral carina low and obtuse, anterior and posterior corners round, posterior margin with broad and deep incision, bottom round (Fig. 7G); middle process of sternum 7 broad and triangular, basal breadth about 1/3 breadth of sternite 7; lance long and slender, subapical annuli clearly broadened, total length of annuli 5.4× height of 13^th annulus, first annulus 1.8× as high as broad (Fig. 7L); lancet with 57 annuli and 56 serrulae (Fig. 7L), middle serrulae weakly narrowed toward truncate apex, each side with 4–5 large subbasal teeth, distance between middle serrulae 2.2× basal breadth of serrulae (Fig. 7M).

Male. Color and structure similar to female. Genitalia not examined.

South Korea.

Unknown.

Holotype , female, China: Henan Province, Shan County, Ganshan Park, alt. 1000 m, 31 May 2000, leg. Meicai Wei & Yihai Zhong (ASMN). Paratypes, 7 females and 2 males, same data as the holotype; 1 female and 4 males, same locality, 1 June 2000 (ASMN).

The species is most similar to A. nanjingensis Yan & Wei sp. nov., but differs from the latter in the following characters: the postocellar area 1.2–1.3× broader than long; abdominal tergum 1 without lateral carina, the posterior corner of the tergum not produced; the dorsum of mesoscutellum sparsely and minutely punctured, the surface smooth; the antennomere 3 clearly longer than longest axis of eye; the total length of lance annuli 3.9× height of the 13^th annulus, the first annulus 2.7× as high as broad; lancet with 46 serrulae.

Holotype, female. Body length 14 mm (Fig. 8A).

Color. Head including antenna dark yellowish brown (Fig. 8A), frons and nearby with an obscure black macula (Fig. 8C, F); thorax black, posterior margin and lateral corner of pronotum, tegula, mesoscutellum and lateral carina dark brown, mesepisternum above carina largely, posterior margin of mesepimeron, irregular macula on metepisternum and large macula on metepimeron reddish brown (Fig. 8K); abdomen dark brown, basal margin of tergum 1 and small macula near posterior corner, anterior 4/5 of tergum 2, anterior 1/3 of tergum 3, basal margin of terga 4–7 and sterna 1–3 largely black, tergum 4 slightly paler (Fig. 8O, P). Fore wing strongly smoky, cells 2M, 3M, 2Cu and A largely hyaline, veins and pterostigma largely brown to dark brown; hind wing weakly infuscate (Fig. 8A). Legs dark brown, middle and hind coxae, trochanters and dorsal side of femora black (Fig. 8I, J).

Figure 8. 

Asicimbex latistriatus Yan & Wei sp. nov., A holotype female in dorsal view B allotype male in dorsal view C head of female in front view D head of male in front view E thoracic notum F head of female in dorsal view G head of male in dorsal view H antenna of female I tibia and tarsus J coxa and femur of male K mesopleuron and metapleuron L gonoforceps M penis valve N lancet O abdominal terga P lateral side of abdomen Q middle serrulae R claw.

Head. Dorsum of head with indistinct and fine punctures, other parts smooth, with strong luster (Fig. 8C, F). Clypeus clearly elevated in middle, anterior margin with small and deep incision; malar space 1.8× diameter of middle ocellus (Fig. 8C); postocellar area about 1.2–1.3× broader than long; median furrow weak, lateral furrows fine, weakly divergent backwards; POL: OOL: OCL = 5: 6: 9; in dorsal view head enlarged behind eye (Fig. 8F). Antenna about 1.4× longer than head breadth (Fig. 8H); apical club slightly longer than antennomere 3, with the widest breadth 2.4× apical breadth of antennomere 3, antennomere 3 clearly longer than longest axis of eyes (45: 39).

Thorax. Mesothorax densely punctured, punctures on mesoscutellum sparser, surface smooth; mesonotum feebly shiny; punctures on mesepisternum above carina and elevated parts of mesepimeron dense and deep, clearly defined, interspace between punctures smooth, concave area of mesepimeron microsculptured, punctures on ventral side of mesepisternum sparse (Fig. 8E, K); mesoscutellum roundly elevated, without middle furrow; oblique middle carina on mesepisternum weak but recognizable; cenchri oval, distance between cenchri about 3.4× longest axis of a cenchrus, metascutellum triangularly elevated, distance between serrulae about 2.3× basal breadth of a serrula (Fig. 8E).

Abdomen. Abdominal tergum 1 with minute punctures and microsculptures, other terga finely and densely microsculptured (Fig. 8O, P). Tergum 1 without lateral carina, hind corner roundish, not produced, posterior incision broad and deep, bottom round (Fig. 8O); middle process of sternum 7 broad and triangular, basal breadth about 1/3 breadth of sternite 7; lance short and broad, subapical annuli feebly broadened, total length of annuli 3.9× height of 13^th annulus, first annulus 2.7× as high as broad (Fig. 8N); lancet with 47 annular sutures and 46 serrulae (Fig. 8N), middle serrulae narrowly truncate at apex with about 5 proximal and 5 distal subbasal teeth (Fig. 8Q).

Male. Body length 16 mm (Fig. 8B), body color and structure (Fig. 8D, G) similar to female except for following parts: posterior of postocellar area in middle with a shallow depressed groove; abdominal terga 2–3 largely blackish brown; middle and hind coxae and femora distinctly elongated, with carina; hind femora distinctly swollen, about twice as broad as trochanter; penis valve shown in Fig. 8M, gonoforceps as shown in Fig. 8L.

China (Henan); South Korea?

Body length 13–15 mm in female, 16–17 mm in male; club of antenna dark brown or yellowish brown; middle and hind coxae brown or blackish brown.

The specific epithet is a combination of the Latin word: “lati-” and “-striatus”, referring to the fore wing with a broad longitudinal smoky stripe.

. The adult types of the new species were reared two years later from the larvae collected on the trunk of Ulmus sp. The matured larvae are yellow colored with black head, thorax and abdomen without black macula.

The senior author of the paper examined 2 females and 3 males of A. latistriatus from South Korea in 2013, when there were only five species (eous, malaisei, elminus, ulmusvorus and the undescribed latistriatus) of the undescribed genus Asicimbex known to the author. The specimens were kept in Yeungnam University. Confirmation of this faunal record requires re-examination of the specimens.

Holotype , female, China: Liaoning Province, Haicheng City, Jiulongchuan, 40.624°N, 123.096°E, 650 m, 10 May 2017, leg. Zejian Li (ASMN).

This new species is most similar to A. malaisei (Gussakovskij, 1947) but differs from the latter by the following characters: the lateral sides and posterior end of mesoscutal middle lobe and the inner side of mesoscutal lateral lobes yellowish brown; the dorsum of head with a narrow M-shaped black macula; the pale lateral stripe and pale posterior margin of the first abdominal tergum connected in front of the roundish lateral black macula; the third tergum with a distinct lateral pale macula, the pale macula on terga 6–8 distinct and about 4× broader than long; cenchri broad, distance between cenchri 2.2× the longest axis of a cenchrus; distance between the middle serrulae narrower than 2× the breadth of a serrula; and the total length of annuli of lance 4.8× height of 13^th annulus.

Holotype, female. Body length 20.5 mm (Fig. 9A).

Color. Head and antenna orange brown, dorsum of head with a narrow M-shaped black macula, clypeus yellowish brown (Fig. 9B, C); thorax black, posterior margin and lateral lobe of pronotum, tegula, lateral sides and posterior end of mesoscutal middle lobe and inner side of mesoscutal lateral lobe, mesoscutellum and dorsum of metascutellum, mesepisternum above carina largely, posterior half of katepimeron, lower part of metepisternum, middle of mesosternum yellowish brown (Fig. 9D, G); abdomen yellowish brown, following parts black: a transverse anterior band and a small round lateral macula on tergum 1, tergum 2 entirely, tergum 3 except for lateral small macula, a large triangular middle macula and narrow posterior margin of tergum 4, tergum 5 except for narrow anterior margin, lateral macula on terga 6–8 (Fig. 9E), an anterior small macula on ventral fold of terga 3–8 (Fig. 9H), and basal macula on sterna 3–7; pale middle macula of terga 6–8 same size, about 3× broader than long. Fore wing distinctly infuscate, cells 2M, 3M, 2Cu and 2A largely subhyaline, veins and pterostigma largely brown to pale brown; hind wing weakly infuscate at apex (Fig. 9A); legs largely yellowish brown, middle and hind coxae with black longitudinal stripes ventrally and dorsally, trochanters and femora largely blackish brown (Fig. 9A, H).

Figure 9. 

Asicimbex lii Yan & Wei sp. nov., holotype, female A female adult in dorsal view B head in front view C head in dorsal view D thoracic notum E abdominal terga F antenna G mesopleuron and metapleuron H lateral side of abdomen I hind tarsus J claw K lancet L middle serrulae.

Head. Dorsum of head with minute punctures, clypeus smooth with strong luster (Fig. 9B, C). Clypeus elevated, anterior margin narrowly and deeply incised; labrum small and triangle, long than broad; malar space 1.8× diameter of middle ocellus; postocellar area 2.1× broader than long, middle furrow weak; lateral furrows distinct, slightly divergent backwards; POL: OOL: OCL = 3.5 : 4: 6; head behind eyes weakly enlarged (Fig. 9B, C); antenna 1.6× head breadth, club breadth 2.4× apical breadth of antennomere 3, club length 1.3× length of antennomere 3 (Fig. 9F), antennomere 3 as long as longest axis of eye.

Thorax. Mesonotum very densely punctured (Fig. 9D), mesopleuron densely and minutely punctured, interspaces between punctures microsculptured; mesoscutellum roundly elevated, without middle furrow; mesopleuron with a distinct oblique carina; cenchrus elliptical, distance between inner margin of cenchri 2.2× longest axis of a cenchrus.

Abdomen. Abdominal tergum 1 with minute punctures and microsculptures, other terga finely and densely microsculptured, ovipositor sheath largely smooth (Fig. 9E, H). Tergum 1 with low but distinct lateral carina, anterior corner roundish; posterior margin very deeply and roundly incised (Fig. 9E); middle process of sternum 7 broad and triangular, basal breadth about 1/3 breadth of sternite 7; lance narrow and long, subapical annuli clearly broadened, total length of annuli 4.8× height of 13^th annulus, first annulus 1.5× as high as broad (Fig. 9K); lancet with 47 serrulae (Fig. 9K), middle serrulae weakly narrowed toward truncate apex, each side with 3–4 large subbasal teeth, distance between middle serrulae 1.8× basal breadth of serrulae (Fig. 9L).

Male. Unknown.

China (Liaoning).

The specific epithet refers to the last name of collector of the holotype.

Unknown.

Holotype , female, China: Liaoning Province, Benxi, Mt. Bapanling, 16 May 2017, Ruifen Huang (ASMN).

A. maculotegularis Yan & Wei sp. nov. is close to A. eous (Semenov, 1935) but differs from the latter by the following characters: Tegula largely black; the lateral side of the first abdominal tergum yellowish brown; the 4^th abdominal tergum with a small middle black macula; the middle and hind tibiae reddish brown; the first abdominal tergum with middle part distinctly produced; lancet with 51 serrulae, distance between the middle serrulae 2.2× breadth of a serrula.

Holotype, female. Body length 18.5 mm (Fig. 10A).

Color. Head and antenna dark yellowish brown, dorsum with a subquadrate black macula covering ocellar area, frons, inner half of inner orbit, lateral and middle foveae, clypeus and mouthparts largely yellow brown (Fig. 10C, E); thorax black, pronotum largely, anterior third of tegula, mesoscutellum, dorsum of metascutellum, posterior half of mesepisternum above carina and posterior half of katepimeron, posterior stripe of metepisternum yellowish brown (Fig. 10B, F); dorsum of abdomen black, lateral margin of tergum 1, 4^th tergum except for middle triangular macula, 5^th tergum almost entirely and middle third of terga 6–8 pale yellowish brown, lateral part of terga 6–8 blackish brown (Fig. 10G, H), venter of abdomen dark brown, lateral macula on sterna 4–6 and sternum 7 yellowish brown (Fig. 10I); fore wing distinctly infuscate in anterior half, outer margin without narrow smoky macula, cells 2M, 3M, 2Cu and 2A largely subhyaline, veins and pterostigma pale brown; hind wing very feebly infuscate; legs largely yellowish brown, middle and hind coxae, trochanters and femora largely black (Fig. 10A).

Figure 10. 

Asicimbex maculotegularis Yan & Wei sp. nov., holotype, female A female adult in dorsal view B thoracic notum C head in dorsal view D antenna E head in front view F mesopleuron and metapleuron G abdominal terga H lateral side of abdomen I ovipositor sheath in ventral view J lancet K middle serrulae.

Head. Dorsum of head with minute punctures, clypeus largely smooth, with strong luster (Fig. 10B, C, E). Clypeus elevated, anterior margin roundly incised; labrum small and triangular, slightly broader than long; malar space 1.7× diameter of middle ocellus; postocellar area 2.1× broader than long, middle furrow weak; lateral furrows distinct, divergent backwards; POL: OOL: OCL = 3 : 5: 6; head behind eyes weakly enlarged (Fig. 10C); antenna 1.6× head breadth, club breadth 2× apical breadth of antennomere 3, club length 1.1× as long as antennomere 3 and 1.38× the combined length of antennomeres 4 and 5 (Fig. 10D), antennomere 3 as long as longest axis of eye.

Thorax. Mesonotum densely punctured (Fig. 10B); scutellum strongly elevated with a broad and deep middle furrow, sparsely punctured; mesepisternum above carina densely but shallowly punctured mixed with microsculptures, oblique carina on mesopleuron sharp, mesepimeron largely polished, shiny (Fig. 10F); cenchri elliptical, distance between inner margin of cenchri 2.3× the longest axis of a cenchrus (Fig. 10B).

Abdomen. Abdominal tergum 1 minutely punctured mixed with microsculptures, without lateral smooth patch; lateral carina low but recognizable, anterior corner blunt, posterior corner roundish; posterior margin with broad and incision, bottom not round with obtuse middle process (Fig. 10G, H); middle process of sternum 7 narrow and triangular, basal breadth about 1/6 breadth of sternite 7; lance long and slender, subapical annuli clearly broadened, total length of annuli 5.3× height of 13^th annulus, first annulus 1.8× as high as broad (Fig. 10J); lancet with 52 annuli and 51 serrulae (Fig. 10J), middle serrulae weakly narrowed toward truncate apex, each side with 4–5 large subbasal teeth, distance between middle serrulae 2.2× basal breadth of serrulae (Fig. 10K).

Male. Unknown.

Russia (Ussuri, Vladivostok).

Unknown.

1 female, China: Heilongjiang Province, Shangzhi, Mt. Mao’er, 4 June 2014, leg. Jun Xu (ASMN).

This new species is most similar to A. koreanus Yan & Wei sp. nov. but differs from the latter by the following characters: the black macula on dorsum of head subquadrate; the apical club of antenna as long as antennomere 3, about 1.3× as long as antennomeres 4 and 5 together; cenchrus normal, about 3× as long as broad; the dorsum of mesoscutellum sparsely punctured; the upper half of mesepisternum sparsely punctured, wrinkles indistinct; the lateral carina of the first abdominal tergum roundly curved only in posterior half, anterior corner angulate; lancet with 48 serrulae, the distance between the middle serrulae about 2× breadth of a serrula; lance slender with the first annulus 1.8× as high as broad.

Not type, female. Body length 21 mm (Fig. 11A).

Color. Head and antenna yellowish brown, dorsum with a subquadrate black macula, clypeus and mouthparts largely yellow brown (Fig. 11C, E); thorax largely black, very narrow posterior margin and narrow lateral margin of pronotum, mesoscutellum, dorsum of metascutellum, posterior 3/4 of mesepisternum above carina and posterior stripe of katepimeron, metepisternum largely dark brown (Fig. 11B, F); abdomen mostly dark brown, dorsal side of terga 1–3 entirely, broad triangular middle macula on tergum 4 and narrow basal margin of tergum 5 black, narrow lateral margin of tergum 1, tergum 4 except for middle triangular macula, tergum 5 almost entirely yellowish brown, broad quadrate middle macula on terga 6–8 pale brown (Fig. 11G), lateral part of sterna 4–6 and most of sternum 7 pale brown (Fig. 11H, K); fore wing infuscate in anterior half, outer margin of fore wing with narrow smoky macula, cells 2Rs, base of 3Rs, 2M, most of 3M, apical 2/5 of 1Cu, 2Cu and 2A largely subhyaline, veins and pterostigma pale brown; hind wing faintly infuscate; legs largely yellowish brown, middle and hind coxae, trochanters and femora largely black, tarsi largely yellowish white (Fig. 11A, I, J).

Figure 11. 

Asicimbex malaisei (Gussakovskij, 1947) comb. nov., not type, female A female adult in dorsal view (Red arrow denotes outer margin of fore wing with narrow smoky macula) B mesopleuron and metapleuron C head in dorsal view D antenna E head in front view F thoracic notum (purple arrow denotes scutellum without middle longitudinal furrow) G abdominal terga (anterior corner of lateral carina angulate at abdominal tergum 1) H lateral side of abdomen I coxa and femur J tibia and tarsus K ovipositor sheath in ventral view (green arrow denotes middle process of sternum 7 narrow triangular) L claw M lancet N middle serrulae (orange arrow denotes pattern of subbasal teeth).

Head. Dorsum of head with minute punctures, clypeus smooth, with strong luster (Fig. 11C, E). Clypeus elevated, anterior margin roundly incised; labrum as long as broad, apex round; malar space 1.5× diameter of middle ocellus; postocellar area 2× broader than long, middle furrow weak; lateral furrows distinct, feebly divergent backwards; POL: OOL: OCL = 3 : 5: 6; head behind eyes distinctly enlarged (Fig. 11C). Antenna 1.5× head breadth, club breadth 2.2× apical breadth of antennomere 3, club length 1.1× as long as antennomere 3 and 1.3× combined length of antennomeres 4 and 5 (Fig. 11D), antennomere 3 as long as longest axis of eye.

Thorax. Mesonotum minutely and densely punctured (Fig. 11F); scutellum roundly elevated without middle longitudinal furrow, dorsum densely punctured, anterior slope sparsely punctured; mesepisternum above carina sparsely punctured, wrinkles indistinct; oblique carina on mesopleuron sharp, mesepimeron largely polished, shiny (Fig. 11B); cenchri very narrow and about 4× as long as broad, distance between inner margin of cenchri 3× longest axis of a cenchrus (Fig. 11B).

Abdomen. Abdominal tergum 1 minutely punctured mixed with microsculptures, without lateral smooth patch; lateral carina low and obtuse, anterior corner angulate, posterior corner round, posterior margin with broad and deep incision, bottom round (Fig. 11G); middle process of sternum 7 broad, apex roundish, basal breadth about 1/3 breadth of sternite 7 (Fig. 11K); lance long and slender, subapical annuli clearly broadened, total length of annuli 5.2× height of 13^th annulus, first annulus 1.5× as high as broad (Fig. 11M); lancet with 57 annuli and 56 serrulae (Fig. 11M), middle serrulae weakly narrowed toward truncate apex, each side with 3–4 large subbasal teeth, distance between middle serrulae 2× basal breadth of serrulae (Fig. 11N).

Male. Color and structure similar to female. Genitalia not examined. Description of male see (Gussakovskij 1947).

China (Heilongjiang); Russia (Ussuri).

Unknown.

Gussakovskij (Gussakovskij 1947) described this species and discussed the possibility of it being the male of Asicimbex eous (Semenov 1935). But, the difference with A. eous are the outer margin of fore wing with narrow smoky macula; the mesoscutellum without middle longitudinal furrow, dorsum densely punctured; anterior slope sparsely punctured; the middle process of female sternum 7 narrow triangular, basal breadth much shorter than height and about 1/6 breadth of the sternum; the pattern of subbasal teeth, distance between middle serrulae 2× basal breadth of serrulae; the lateral carina of abdominal tergum 1 low and obtuse, anterior corner angulate, posterior corner round. These characteristics indicate that A. malaisei and A. eous are distinct species.

Holotype , female, China: Jiangsu Province, Nanjing City, Zhongshanling, July 2007, leg. Meicai Wei. Paratype, 1 male, same data as holotype (ASMN).

This new species is most similar to A. concavicaputus Yan & Wei sp. nov. but differs from it by the following characters: antennomere 3 as long as the longest axis of eye; malar space shorter than the basal 2 antennomeres together; the anterior smoky stripe of fore wing extending to the apex; head with dorsal black macula remote from eyes; posterior of postocellar area not concave at middle; the first annulus of lance 2.2× as high as long.

Holotype, female. Body length 15 mm (Fig. 12A).

Color. Head dark brown (Fig. 12C, F), frontal area and ocellar area blackish brown; antenna brown at base, dark brown at apex. Thorax black (Fig. 12E, I), posterior margin of pronotum, anepimeron, tegula, metascutellum and lateral carina, metanotum, a large macula on posterior of mesepisternum, middle suture of metepisternum, metepimeron largely reddish brown; abdomen dark brown (Fig. 12L, M), tergum 1 except both lateral margins black, tergum 2 blackish brown, basal margin of terga 3–8 black. Legs reddish brown, middle and hind coxae, trochanters and stripes on outer side of femora brownish black. Fore wings smoky in anterior half and hyaline in posterior half (Fig. 12A), veins pale brown, stigma yellowish brown; hind wing weakly infuscate.

Figure 12. 

Asicimbex nanjingensis Yan & Wei sp. nov., A holotype female in dorsal view B allotype male in dorsal view C head of female in front view D head of male in front view E thoracic notum F head of female in dorsal view G head of male in dorsal view H antenna of female I mesopleuron and metapleuron J gonoforceps K penis valve L abdominal terga M lateral side of abdomen N lancet O middle serrulae P coxa and femur of male.

Head. Head densely and minutely punctured dorsally, clypeus sparsely punctured, surface smooth with strong luster; anterior incisions of clypeus deep and round; labrum small, broader than long; malar space 1.6× diameter of middle ocellus; postocellar area 1.5× broader than long; without middle furrow; lateral furrows narrow, subparallel; POL: OOL: OCL = 5: 8: 11. Head clearly dilated behind eye in dorsal view (Fig. 12C, F). Antenna about 1.6× broader than head breadth, club breadth about 2.2× apical breadth of antennomere 3, club length 1.1× length of antennomere 3, antennomere 3 as long as the longest axis of eyes (Fig. 12H).

Thorax. Mesonotum, mesopleuron deeply and densely punctured, interspace between punctures microsculptured (Fig. 12E, I). Notauli broad and deep; lower margin of metapleuron with obtuse oblique carina; mesoscutellum roundly elevated without middle furrow; cenchri elliptical, distance between cenchri about 3× the longest axis of a cenchrus; metascutellum triangularly protruded upwards (Fig. 12E).

Abdomen. Abdominal terga with fine and dense microsculptures (Fig. 12L, M). Tergum 1 with distinct lateral carina at anterior 2/3, hind corner pointed, distinctly protruded, posterior margin broadly and very deeply incised to a depth about 3/4 lateral length of tergum; middle process of sternum 7 broad, apex roundish, basal breadth about 1/3 breadth of sternite 7. Lancet with 42 serrulae (Fig. 12N); middle serrulae distinctly narrowed toward blunt apex with 4–5 proximal and 5–6 distal subbasal teeth, distance between serrulae 2.6× basal breadth of a serrula (Fig. 12O); lance short and broad, subapical annuli feebly broadened, total length of annuli 3.6× height of 13^th annulus, first annulus 2.2× as high as broad (Fig. 12L).

Male. Body length 20 mm (Fig. 12B). Body color and structures similar to female, but differs from the latter in the following characters: fore coxae and femora distinctly prolonged (Fig. 12P), middle and hind coxae and femora distinctly enlarged and extended, coxae prismatic with edges, shiny. Subgenital plate roundish at apex. Penis valve broad as shown in Fig. 12K, gonoforceps as shown in Fig. 12J.

China (Jiangsu).

The species name is derived from its type locality, Nanjing.

Unknown.

Holotype , female, China: Liaoning Province, Shenyang City, Mt. Qipan, 11 May 2014, leg. Tao Li (ASMN).

This new species is similar A. lii Yan & Wei sp. nov., but differs from it by the following characters: the apical club of antenna clearly shorter than antennomere 3 and about 1.15× as long as antennomeres 4 and 5 together; the mesoscutal middle and lateral lobes black without pale markings, mesepisternum above carina almost entirely reddish brown, surface almost smooth; lancet with 51 serrulae, serrula small, clearly narrowed toward apex, distance between the middle serrulae more than 2× as broad as a serrula; the total annuli length of lance 5.4× height of the 13^th annulus.

Holotype, female. Body length about 19 mm (Fig. 13A).

Color. Head and antenna dark yellowish brown (Fig. 13B–D), dorsum with a M-shaped black macula; thorax black (Fig. 13E), narrow posterior margin and broad lateral margin of pronotum, tegula, mesoscutellum and dorsum of metascutellum yellowish brown, mesepisternum largely (only small macula on anterior margin black), posterior part of mesepimeron, metapleuron largely reddish brown (Fig. 13E, H). Abdominal terga 1–3, median triangular macula of tergum 4, anterior margin of tergum 5 black, other part of tergum 4 and almost entirely tergum 5 yellow brown; both sides of terga 6–8 and ventral fold of terga 2–8 dark brown to blackish brown (Fig. 13I); sternites largely dark brown; both sides of sternites 4–7 pale brown (Fig. 13F, I); pale macula at middle of terga 6–8 of the same size, above 4× broader than long (Fig. 13F). Fore wing infuscate in anterior half and subhyaline in posterior half, veins and stigma pale brown (Fig. 13A). Legs yellowish brown, coxae with black longitudinal stripes ventrally and dorsally, trochanters and femora largely blackish brown (Fig. 13G).

Figure 13. 

Asicimbex shengi Yan & Wei sp. nov., holotype, female A female adult in dorsal view B head in dorsal view C antenna D head in front view E thoracic notum F abdominal terga G leg H mesopleuron and metapleuron I lateral side of abdomen J lance K ovipositor sheath in lateral view L lancet M middle serrulae.

Head. Dorsum of head with indistinct minute punctures, remaining parts smooth with strong luster (Fig. 13B, D). Anterior incision of clypeus small and roundish, labrum small, roundish at apex; malar space about 1.5× diameter of middle ocellus; postocellar area weakly elevated, 2× broader than long; lateral furrows distinct, slightly divergent backwards, anterior part of middle groove distinct; POL: OOL: OCL = 3: 4: 6; head behind eyes weakly enlarged (Fig. 13B, D). Antenna length about 1.5× head breadth, club 1.2× as long as antennomere 3, club breadth about 2.1× apical breadth of antennomere 3, antennomere 3 as long as longest axis of eyes (Fig. 13C).

Thorax. Mesonotum including mesoscutellum densely punctured (Fig. 13E); mesopleuron indistinctly and finely punctured, hardly microsculptured, shiny (Fig. 13H); mesosternum shallowly and weakly punctured. Median mesoscutal groove and notaulus broad and shallow; mesoscutellum roundly elevated without middle furrow; mesepisternum with a distinct oblique carina; cenchri narrow, distance between inner margin of cenchri 2.2× longest axis of a cenchrus.

Abdomen. Abdominal terga finely and densely microsculptured (Fig. 13F). Tergum 1 with lateral carina distinct, posterior corner not produced, posterior margin broadly and roundly incised (Fig. 13F); middle process of sternum 7 broad, basal breadth about 1/3 breadth of sternite 7 (Fig. 13G); apical margin of ovipositor sheath truncate in lateral view (Fig. 13K). Lancet with 51 serrulae (Fig. 13L), middle serrulae distinctly narrowed toward truncate apex with 4–6 proximal subbasal teeth and 3–5 distal subbasal teeth, distance between serrulae about 2.3× basal breadth of serrula (Fig. 13M); lance long and slender, subapical annuli broadened, total length of annuli 5.4× height of 13^th annulus, first annulus 1.6× as high as broad (Fig. 13J).

Male. Unknown.

China (Liaoning).

The specific epithet refers to the last name of Dr. Maoling Sheng, a famous Chinese taxonomist of Ichneumonidae.

Unknown.

2 females and 1 male, China: Henan Province, 10 June, no other data; 1 female, China, without collection data (ASMN); 3 females and 3 males, [CHINA: Hubei] Wuhan, 14 April 1990 (2 females and 2 males, kept in NMST, 1 female and 1 male, exchanged specimens, kept in ASMN); 1 female and 1 male, China: Anhui Province, Yuexi, 1983, Guoqing Zhong, Tiying Zhou; 2 females, China: Zhejiang, Lishui, 2–3 April 1981; 2 males, China: Zhejiang, Lishui, 2 April 1979, larvae feeding on Ulmus parvifolia; 1 male, China: Zhejiang, Hangzhou, 26 April 1981, Guangwu Li; 1 female, China: Zhejiang, Hangzhou Plant Garden, larvae feeding on Ulmus parvifolia (CAF).

The species is very different from its congeners in the following characters: the body much more slender and largely yellow brown, the dorsum of head without large black macula, the dorsum of thorax with three isolated black maculae, the abdomen yellow, the second tergum black with a transverse middle yellow macula; malar space 1.2× diameter of median ocellus; antenna long and about 1.8× (female) or 2.1× (male) head breadth, the club breadth 1.7× apical breadth of antennomere 3; the abdominal tergum 1 largely smooth and shiny; the middle serrulae each with 2–3 large lateral teeth, and the total annuli length of lance 5.9× height of the 13^th annulus.

Not type. Female. Body length 20 mm (Fig. 14A).

Color. Body yellowish brown (Fig. 14A), small macula on bottom of lateral fovea and middle fovea blackish brown, clypeus and mouthparts paler (Fig. 14D); middle furrow of pronotum, three longitudinal stripes on mesonotum (Fig. 14I), mesosternum except middle furrow, broad anterior stripe on mesepimeron, metapleuron largely, middle and hind coxae, trochanters and femora, tergum 2 except middle macula, basal margin of abdominal terga 1 and 3–5, black; antenna dark reddish brown; middle and hind tibiae reddish brown. Wing color as in Fig. 14A, stigma yellowish brown.

Figure 14. 

Asicimbex ulmusvorus (Yang, 1996) comb. nov. A female in dorsal view B male in dorsal view C head of female in dorsal view D head of female in front view E mesopleuron and metapleuron F antenna of female G head of male in dorsal view H head of male in front view I thoracic notum J hind tarsus K lateral side of abdomen L lancet M gonoforceps N penis valve O middle serrulae.

Head. Dorsum of head minutely punctured, clypeus smooth, with luster; malar space 1.2× diameter of middle ocellus (Fig. 14D); postocellar area slightly elevated, about 2× broader than long, median furrow weak; lateral furrows shallow and curved, subparallel to each other; POL: OOL: OCL = 3: 5: 7, head behind eyes slightly enlarged (Fig. 14C). Antenna about 1.8× longer than head breadth, antennomere 3 slightly curved, longer than longest axis of eyes (43: 38); club enlarged, widest breadth about 1.7× apical breadth of antennomere 3 and about as long as antennomere 3 (Fig. 14F).

Thorax. Median and lateral mesoscutal lobes with distinct punctures, surface smooth; dorsum of mesoscutellum sparsely punctured; mesepisternum minutely punctured mixed with irregular wrinkles, less shiny, mesepimeron sparsely punctured, shiny (Fig. 14E). Mesoscutellum roundly elevated, without middle furrow (Fig. 14I); mesepisternum with weak oblique carina (Fig. 14E); cenchri elliptical, distance between inner margin of cenchri 2.1× longest axis of a cenchrus (Fig. 14I).

Abdomen. Abdominal tergum 1 smooth, with strong luster; other terga densely and minutely microsculptured, with feeble luster; tergum 1 with broad and round incision, lateral carina low but distinct, anterior corner angulate, posterior corner not produced; subgenital plate strongly protruded in middle 1/3. Lancet with 54 serrulae (Fig. 14L), middle serrulae weakly narrowed toward truncate apex, with 2–3 proximal and distal subbasal teeth, distance between serrulae 1.8× basal breadth of serrulae (Fig. 14O); lance long and slender, subapical annuli broadened, total length of annuli 5.9× height of 13^th annulus, first annulus 1.5× as high as broad (Fig. 14L).

Male. Body length 20 mm (Fig. 14B). Body color and structures similar to female except for head hardly dilated behind eye in dorsal view and antenna about 2.1× head breadth; apex of subgenital plate roundish; gonoforceps as in Fig. 14M, penis valve as in Fig. 14N.

China (Anhui, Henan, Hubei, Zhejiang).

Ulmus parvifolia Jacq. and U. pumila L. (Yang and Li 1996). The larva is green with 3 irregular black maculae on each annulus of body except for the last one (Yang et al. 1996).