Holotype. ♀, China, Shaanxi prov., Qinling, Jialingjiang, 34.2°N, 106.8°E, 2000 m, 1998.VI.8, Du Yuzhou, No. 983341 (ZJUH). Paratypes: China: 30♀♀4♂♂, same data with holotype, Nos. 983342–983375 (ZJUH, 2♀♀ No. 983368–983369 kept in TARI); 2♀♀4♂♂, same location and time data with holotype, Ma Yun, Nos. 982946–982947 (ZJUH); 4♀♀, Shaanxi prov., Qinling, Tiantaishan, 1998.VI.9, Sun Changhai, Nos. 985918–985921 (ZJUH); 2♀♀, Shaanxi prov., Zhouzhi, Houzhenzi, 1300 m, 1998.VI.2–3, Ma Yun, Nos.981235–981236 (ZJUH); 1♀, Shaanxi prov., Foping, Longcaoping, 33.5°N, 107.9°E, 1998.VI.4, Ma Yun, No. 981985 (ZJUH); 4♀♀1♂, Shaanxi prov., Lantian, Tangyu, 34.1°N 109.3°E, 1998.VI.1, Ma Yun, Nos. 981217–981221 (ZJUH); 1♀, Shaanxi prov., Fengxian, Jialingjiang, 33.9°N, 106.5°E, 1998.VI.10, Sun Changhai, No. 985865 (ZJUH); 2♂♂, Shaanxi prov., Ningshan, Xunyangzhen, 33.3°N, 108.3°E, 1998.VI.6, Ma Yun, Nos. 982885–9828856 (ZJUH); 23♂♂, Shaanxi prov., Ningshan, Xunyangba, 2011.V.6, Chen Huayan, Nos. 201100192–201100214 (ZJUH).

This new species belongs to the himalensis species group, and it runs to A. himalensis Mason in Bennett’s key (2001), but differs in ♂ lateral of pronotum without longitudinal rugosity dorso-posteriorly (the latter with longitudinal rugosity); ♀ length of spine of scutellum 0.9 × length of propodeum, produced 50° dorsoposteriorly (the latter 0.6–0.7 × , more or less 35°); ♂ claspers in lateral view parallel dorso-ventrally, 1.2 × its apical width (the latter slightly enlarged, 2.4 × its apical width); legs black (the latter at least partly pale yellowish-brown). It differentiates from other new species proposed in this study by the combination characters: ♀ frons without a longitudinal carina; mesoscutum and scutellum completely black, without pale spots; mesoscutum mostly pubescent; scutellum long triangle-shaped, tapered apically; length of scutellum 2.5 × its basal width; spine of scutellum produced 50° dorsoposteriorly; length of T1 4.1–4.2 × apical width; ♂scutellum more or less parallel in basal 0.25; spine of scutellum produced 50° dorsoposteriorly; length of T1 6.5 × its apical width; paramere 1.2 × its apical width.

Female. Body length 6.2 mm; fore wing length 5.0 mm.

Head. Head width 1.0 × its median length. Antennae 29-segmented, 0.6 × length of forewing. Temple behind eyes slightly roundly narrowed in dorsal view. Transverse diameter of eye 1.2 × temple in dorsal view. Frons convex medially, without longitudinal carina. Antennal scrobe deep, with a weak carina on its lateral margin parallel to inner orbit of eye. Ocelli medium-sized, in triangle with base equal to its sides. POL: OD: OOL = 10: 12: 16. Face convex medially with coarse rugosity and dense pubescence. Area between antennal socket with a glabrous short longitudinal tubercle. Clypeus nearly pentagonal, 1.0 × its maximum width, roundly convex, flat and rugose with punctuation in basal half; thin apically, finely strigate, slightly rounded on apical margin; summit of covexity of clypeus smoothly rounded in lateral view. Distance between dorsal tentorial pits 2.5 × length between a tentorial pit and eye. Malar space equal to basal width of mandible. Occipital carina fine, but complete.

Mesosoma. Pronotum with long and strong epomia, portion dorsal to pronotal furrow curved sigmoidally; lateral of pronotum with more than 10 fine carinae dorso-posteriorly. Mesoscutum densely punctulate; notaulus distinct, meeting in apical 0.2. Scutellum long triangle-shaped, 2.5 × its basal width, 1.4 × length of propodeum; basal half of scutellum with lateral carinae and punctuation-rugosity, convex medially, tapering towards to apex, spine-like apical half, smooth; in lateral view scutellum roundly curved medially, distinctly up curved, apex slightly obliquely truncate, produced 50° dorsoposteriorly. Mesopleuron and metapleuron finely punctuate and pubescent; ecepicnemial carina strong, extending to ventral-anterior of mesopleuron; mesopleural sulcus complete; sternaulus strong. Propodeum finely coriaceous-punctate; lateromedian longitudinal carinae weakly convergent posteriorly; lateral longitudinal carinae straight, complete and paralleled with lateromedian longitudinal carinae.

Figure 1. 

habitus, lateral aspect. A ♀, Agriotypus dui Tang, He & Chen, sp. nov. B ♂, Agriotypus dui Tang, He & Chen, sp. nov. Scale bar: 0.5 mm.

Wings. Fore wing with vein 1cu-a just distad of M&RS, abscissa of vein M between 2rs-m and 2cu-m 1.5 × 2rs-m; hind wing with vein CU & cu-a intercepted by distal abscissa of CU at lower 0.15.

Metasoma. T1 4.1 × its apical width, 1.9 × length of propodeum; T1 finely punctulate-reticulate, spiracles situated in basal 0.3, lateral margin of T1 behind spiracles parallel; lateromedian carinae and dorsolateral carinae complete and strong, reaching to apex. T2 convex on basomedian area, with fainly carina before spiracle. T2 and following tergite densely punctulate. Ovipositor sheath 0.9 × length of hind basitarsus.

Figure 2. 

Agriotypus dui Tang, He & Chen, sp. nov. A ♀, antennae & wings B ♀, mesosoma, lateral aspect C ♀, mesosoma, dorsal aspect D ♀, lateral of pronotum E ♀, metasoma (except T1), dorsal aspect F ♀, head, front aspect G ♀, head, dorsal aspect H ♀, propodeum, dorsal aspect I ♀, T1, dorsal aspect J ♂, T1, dorsal aspect K ♀, ovipositor sheath, lateral aspect L ♂, paramere, lateral aspect.

Colour. Black. Pronotum ventrally, tip of spine of scutellum, apical of metasomal tergite reddish brown. Fore wing with three fuscous longitudinal bands: basal band on basal 0.1–0.5 of forewing, but with a wide hyaline spot occupying middle of cell R; substigmal band below stigma and distal band in distal 0.25 of forewing; hind wing only apical margin slightly infuscate.

Figure 5. 

Agriotypus morsei Tang, He & Chen, sp. nov. A antennae and wings B mesosoma, lateral aspect C mesosoma, dorsal aspect D lateral of pronotum E T1, dorsal aspect F head, front aspect G head, dorsal aspect H propodeum, dorsal aspect I metasoma (except T1), dorsal aspect J paramere, lateral aspect.

Variation. Body length 5.6–6.6 mm; fore wing length 4.8–5.2 mm. Head width 1.1 × its median length. Antennae 30-segmented. Scutellum 2.8 × its basal width; Fore wing with 1cu-a slightly distad of M&RS, abscissa of vein M between 2rs-m and 2cu-m 1.0–2.0 × 2rs-m; T1 3.6–3.9 × its apical width, 1.6 × length of propodeum. Body color dark reddish brown.

Male. Body length 6.2–6.8 mm; fore wing length 5.4–5.7 mm. Antennae 39–40-segmented. POL: OD: OOL = 13: 12: 20. Lateral of pronotum without longitudinal rugosity dorso-posteriorly. Scutellum long triangle-shaped, 1.15–1.2 × length of propodeum; lateral carinae in basal 0.25 of scutellum more or less parallel, in apical 0.75 lineally narrowed; basal 0.45–0.5 of scutellum convex medially, with punctuation-rugosity; apical 0.5–0.55 of scutellum spine-like. lateromedian longitudinal carinae of propodeum more or less parallel, distinctly convergent in apical half. Fore wing with vein 1cu-a just distad of M&RS, abscissa of vein M between 2rs-m and 2cu-m slightly longer than 2rs-m; hind wing with CU & cu-a interrupted at lower 0.2. T1 6.5–6.8 × its apical width, 2.4–2.5 × length of propodeum; lateral margin of petiole more or less parallel. Paramere short, 1.2 × its apical width, apically bluntly round, more or less truncate. Fore wing faintly infuscate, only with more or less fuscous bands apically and below stigma. Otherwise similar to female.

Unknown.

China (Shaanxi).

This species is named in honour of Dr Du Yuzhou, the collector of the type specimen.

Holotype. ♀, China, Shaanxi prov., Qinling, Tiantaishan, 34.2°N, 106.8°E, 2000 m, 1998.VI.8, Du Yuzhou, No. 983376 (ZJUH). Paratypes: 1♀, China, Shaanxi prov., Zhouzhi Houzhenzi, 1990.V.24, Du Yuzhou, No. 984474 (TARI); 1♀, China, Shaanxi prov., Zhouzhi Houzhenzi, 1990.V.24, Du Yuzhou, No. 984475 (ZJUH); 1♀, China, Shaanxi prov., Foping Longcaoping, 33.5°N, 107.9°E, 1998.VI.4, Ma Yun, No. 981986 (ZJUH).

This new species belongs to the himalensis species group, and it runs to A. maculiceps Chao in Bennett’s key (2001), but differs in frons with longitudinal carina (the latter without); pronotum finely punctate-rugose (the latter reticulate-rugose); scutellum entirely black (the latter pale in apical half), spine of scutellum produced more or less 85° dorsoposteriorly (the latter 35–45°). It differentiated from other new species proposed in this study by the combination characters: ♀ vertex near eyes and mesoscutum medio-posteriorly with large reddish brown patch; frons with a longitudinal carina; mesoscutum mostly glabrous; spine of scutellum produced 85° dorsoposteriorly.

Female. Body length 7.4 mm; fore wing length 5.8 mm.

Head. Head width 0.8 × its median length. Antennae 23-segmented, 0.5 × length of forewing. Temple behind eyes distinct narrowed in dorsal view. Transverse diameter of eye 1.0 × temple in dorsal view. Frons convex medially, with longitudinal carina. Antennal scrobe more or less shallow. Ocelli in triangle with base equal to its sides. POL: OD: OOL = 12: 11: 24. Face convex medially with coarse rugosity and dense pubescence. The area between antennal socket with a glabrous circular tubercle. Clypeus nearly pentagonal, almost equal to its maximum width, roundly convex, flat and rugose with punctuation in basal 0.6; thin in apical 0.4, without distinct rugosity, bluntly rounded on apical margin; summit of covexity of clypeus smoothly rounded in lateral view. Distance between tentorial pits 1.3 × length between a dorsal tentorial pit and eye. Malar space 1.15 × basal width of mandible. Occipital carina fine, but complete.

Figure 3. 

habitus, lateral aspect A Agriotypus maae Tang, He & Chen, sp. nov. B Agriotypus morsei Tang, He & Chen, sp. nov. Scale bar: 0.5 mm.

Mesosoma. Pronotum with fine epomia, dorsally curved angulate posteriorly; lateral of pronotum glabrous, reticulate in dorsal half, dense pubescent in ventral half. Mesoscutum mostly glabrous, shiny, with fine punctulation and rugosity partly; median lobe medially and lateral lobe mostly smooth; notaulus narrow, more or less crenulated, meeting in apical 0.3. Scutellum long triangle-shaped, 2.5 × its basal width, 1.2 × length of propodeum; basal half of scutellum with lateral carinae and reticulation-rugosity, convex medially, lateral margin of scutellum paralleled in basal 2/3, tapering towards to apex, spine-like apical half, smooth; in lateral view scutellum roundly curved medially, spine-like in apical 0.4, distinctly up curved, apex tapered, produced 85° dorsoposteriorly; ecepicnemial carina strong, extending to ventral-anterior of mesopleuron; mesopleural sulcus complete; sternaulus strong. Propodeum punctate-reticulate; lateral longitudinal carinae straight and strong and paralleled with lateromedian longitudinal carinae.

Figure 4. 

Agriotypus maae Tang, He & Chen, sp. nov. A antennae and wings B mesosoma, lateral aspect C mesosoma, dorsal aspect D lateral of pronotum E T1, dorsal aspect F head, front aspect G head, dorsal aspect H propodeum, dorsal aspect I metasoma (except T1), dorsal aspect J ovipositor sheath, lateral aspect.

Wings. Fore wing with vein 1cu-a distad of M&RS, abscissa of vein M between 2rs-m and 2m-cu 0.8 × 2rs-m; hind wing with vein CU & cu-a interrupted by distal abscissa of CU at lower 0.15.

Metasoma. T1 3.5 × its apical width, 1.5 × length of propodeum; T1 finely reticulate-punctate, spiracles situated in basal 0.3, lateral margin of petiole behind spiracles parallel; lateromedian carinae and dorsolateral carinae complete and strong, reaching to apex. T2 convex on basomedian area, with a pair of short carinae medially and a lateral carina before spiracle. T2 and following tergite densely punctulate. Ovipositor sheath 2.2 × length of hind basitarsus.

Colour. Black, vertex near eyes and mesoscutum medio-posteriorly with large reddish brown patch. Hypopygium yellowish brown apically. Leg black. Fore wing with three dark brown longitudinal bands: basal band on basal 0.1–0.5 of forewing, but with a wide hyaline fascia occupying middle of cell R; substigmal band below stigma and distal band in distal of forewing; hind wing nearly hyaline.

Variation. Body length 7.0–7.4 mm; fore wing length 5.6–5.8 mm. Antennae 25-segmented. Transverse diameter of eye 0.9 × temple in dorsal view. Scutellum 2.0 × its basal width, 1.4 × length of propodeum. T1 4.1 × its apical width, 2.2 × length of propodeum.

Male. Unknown.

Unknown.

China (Shaanxi).

This species is named in honour of Mrs Ma Yun, who collected many materials of Agriotypus and provided a lot of help in our research work.

Holotype. ♂, China, Shaanxi prov., Qinling, Tiantaishan, 34.2°N, 106.8°E, 2000 m, 1998.VI.8, Ma Yun, No. 982948 (ZJUH).

This new species belongs to the himalensis species group, and it runs to A. tangi Chao in Bennett’s key (2001), but differs in body and spine of scutellum black (the latter brown to reddish brown); spine of scutellum produced more or less 80° dorsoposteriorly (the latter 20°); T1 5.5 × its apical width (the latter at least 7.0 ×); paramere in lateral view parallel dorso-ventrally, 3.0 × its apical width (the latter enlarged apically, 1.8 × its apical width); T2 finely punctulate (the latter striate-rugose). It differentiates from other new species (A. dui sp. nov.) proposed in this study by the combination characters: ♂ scutellum tapering from base to tip (the latter more or less parallel in basal 0.25); spine of scutellum produced 80° dorsoposteriorly (the latter 50°); length of T1 4.8 × its apical width (the latter 6.5 ×); paramere 3.0 × its apical width (the latter 1.2 ×).

Male. Body length 5.6 mm; fore wing length 5.2 mm.

Head. Head width 0.83 × its median length. Antennae 35-segmented, 1.2 × length of forewing. Temple behind eyes distinct narrowed in dorsal view. Transverse diameter of eye 1.2 × temple in dorsal view. Frons slightly convex medially, without longitudinal carina. Antennal scrobe more or less shallow, deeper near antennal socket, without a carina on its lateral margin parallel to inner orbit of eye. Ocelli in triangle with base equal to its sides. POL: OD: OOL = 12: 13: 20. Face convex medially with coarse rugosity and dense pubescence. Area between antennal socket with a glabrous short longitudinal tubercle. Clypeus nearly pentagonal, 0.75 × its maximum width, roundly convex, flat and rugose with punctuation in basal 0.6, thin in apical 0.4, without distinct rugosity, bluntly rounded on apical margin; summit of covexity of clypeus smoothly rounded in lateral view. Distance between dorsal tentorial pits 1.8 × length between a tentorial pit and eye. Malar space 1.8 × basal width of mandible. Occipital carina fine, but complete.

Mesosoma. Pronotum with strong epomia, dorsally curved angulate posteriorly. Mesoscutum densely punctulate; notaulus narrow, meeting in apical 0.1. Scutellum long triangle-shaped, 2.0 × its basal width, 1.1 × length of propodeum; basal half of scutellum with lateral carinae and punctuation-rugosity, convex medially, tapering towards to apex, spine-like apical half, smooth; in lateral view scutellum roundly curved medially, distinctly up curved, apex tapered, produced 80° dorsoposteriorly. Prepectal carina strong, extending to ventral-anterior of mesopleuron; mesopleural sulcus shallow, indistinct posteriorly, finely longitudinally rugose dorsally, mostly sparsely punctate posteriorly. Propodeum punctate-rugose; lateromedian longitudinal carinae distinctly convergent posteriorly; lateral longitudinal carinae more or less straight, complete and paralleled with lateromedian longitudinal carinae.

Wings. Fore wing with vein 1cu-a distad of M&RS, abscissa of vein M between 2rs-m and 2cu-m 0.8 × 2rs-m; hind wing with vein CU & cu-a intercepted by distal abscissa of CU interrupted at lower 0.3.

Metasoma. T1 5.5 × its apical width, 1.8 × length of propodeum; T1 punctulate-reticulate, spiracles situated in basal 0.3, lateral margin of T1 behind spiracles parallel; lateromedian carinae and dorsolateral carinae complete and strong, reaching to apex. T2 convex on basomedian area, with a pair of short carinae medially and a lateral carina before spiracle. T2 and following tergite fine and sparse punctulate, nearly smooth. Paramere in lateral view parallel dorso-ventrally, 3.0 × its apical width, apically roundly truncate.

Colour. Black. apical of metasomal tergite and paramere reddish brown. Fore wing with two faint fuscous longitudinal bands: substigmal band below stigma and distal band in distal 0.25 of forewing; hind wing only apical margin slightly infuscate.

Female. Unknown.

Unknown.

China (Shaanxi).

This species is named in honour of Prof. J.C. Morse of Clemson University, USA, who sponsored the survey on aquatic insect in Shaanxi Qinling natural reserve in 1998.

Holotype. ♀, China, Zhejiang prov., Taishun, Wuyanling, 34.2°N, 106.8°E, malasy trap, 2005.VIII.1–2, Wang Yiping, No. 200604963 (ZJUH).

This new species belongs to the himalensis species group, and it runs to A. lui Chao in Bennett’s key (2001), but differs in spine of scutellum slender, produced dorsal posteriorly (the latter spine of scutellum thicker, produced posteriorly); T1 5.5 × its apical width (the latter 2.6 ×); lateromedian longitudinal carinae of propodeum more or less parallel (the latter distinctly convergent apically). It differentiates A. zhejiangensis He & Chen from Zhejiang, China in body reddish brown (the latter black); spine of scutellum distinctly upcurved (the latter completely straight); forewing with fuscous longitudinal bands (the latter without); length of T1 5.5 × apical width (the latter 4.6´). It differentiates from other new species proposed in this study by the combination characters: ♀ body reddish brown, mesoscutum without pale spots posteriorly; frons with a longitudinal carina; distance between tentorial pits 3.8 × the length between a tentorial pit and eye; scutellum long triangle-shaped; spine of scutellum longer than length of propodeum, produced more or less 30° dorsoposteriorly, apex more or less truncate; T1 5.5 × its apical width.

Figure 6. 

habitus, lateral aspect. A Agriotypus taishunensis Tang, He & Chen, sp. nov. B Agriotypus yangae Tang He & Chen, sp. nov. Scale bar: 0.5 mm.

Female. Body length 7.3 mm; fore wing length 5.0 mm.

Head. Head width 0.9 × its median length. Antennae broken. Temple behind eyes linearly narrowed in dorsal view. Transverse diameter of eye 1.7 × temple in dorsal view. Frons convex medially, with a longitudinal carina. Antennal scrobe shallow. Ocelli medium-sized, in triangle with base equal to its sides. POL: OD: OOL = 11: 10: 12. Face convex medially with coarse rugosity and dense pubescence. Clypeus nearly pentagonal, 0.9 × its maximum width, roundly convex, thin in apical 0.4, almost truncate on apical margin; summit of covexity of clypeus smoothly rounded in lateral view. Distance between dorsal tentorial pits 3.8 × length between a tentorial pit and eye. Malar space equal to basal width of mandible. Occipital carina fine, but complete.

Figure 7. 

Agriotypus taishunensis Tang, He & Chen, sp. nov. A wings B mesosoma, lateral aspect C mesosoma, dorsal aspect D lateral of pronotum E T1, dorsal aspect F head, front aspect G head, dorsal aspect H propodeum, dorsal aspect I metasoma (except T1), dorsal aspect J ovipositor sheath, lateral aspect.

Mesosoma. Pronotum with strong epomia, dorsally curved angulate; lateral of pronotum with more than fine carinae dorso-posteriorly. Mesoscutum finely shiny, with dense punctures; notaulus distinct, meeting in apical 0.2. Scutellum long triangle-shaped, 2.8 × its basal width, 1.6 × length of propodeum; basal half of scutellum with lateral carinae and reticulation-rugosity, convex medially, lateral margin of scutellum paralleled in basal half, tapering towards to apex, spine-like apical half, smooth; in lateral view scutellum roundly curved medially, spine-like in apical half, distinctly up curved, apex tapered, produced 30° dorsoposteriorly; ecepicnemial carina strong, extending to ventral-anterior of mesopleuron; mesopleural sulcus complete; sternaulus strong. Propodeum finely coriaceous-punctate, lateromedian longitudinal carinae more or less parallel; lateral longitudinal carinae straight, complete and paralleled with lateromedian longitudinal carinae.

Wings. Fore wing with vein 1cu-a interstitial of M&RS, abscissa of vein M between 2rs-m and 2cu-m 1.25 × 2rs-m; hind wing with vein CU & cu-a intercepted by distal abscissa of CU interrupted at lower 0.2.

Metasoma. T1 5.5 × its apical width, 2.0 × length of propodeum; T1 corasely punctate, spiracles situated in basal 0.3, lateral margin of petiole behind spiracles parallel; lateromedian carinae and dorsolateral carinae complete and strong, reaching to apex. T2 convex on basomedian area, with a pair of short carinae medially and a lateral carina before spiracle. Ovipositor sheath 0.9 × length of hind basitarsus.

Colour. Reddish brown; metasoma apically and legs dark brown. Fore wing with three fuscous longitudinal bands: basal band on basal 0.1–0.5 of forewing, but with a wide hyaline fascia occupying middle of cell R; substigmal band below stigma and distal band in distal of forewing; hind wing nearly hyaline.

Unknown.

China (Zhejiang).

Name derived from the name of location where the holotype was collected.

Holotype. ♀, China, Shaanxi prov., Qinling, Tiantaishan, 34.2°N, 106.8°E, 1998.VI.9, Sun Changhai, No. 985922 (ZJUH).

This new species belongs to the himalensis species group, and it runs to A. chaoi Bennett in Bennett’s key (2001), but differs in ♀ scutellum funnel-shaped (the latter triangle-shaped); spine of scutellum black (the latter light brown apical half); mesoscutum punctate and pubescent (the latter sparsely pubescent and impunctate postero-medially). It differentiates from other new species proposed in this study by the combination characters: ♀ frons without a longitudinal carina; mesoscutum and scutellum completely black, without pale spots; mesoscutum pubescent; scutellum funnel-shaped; length of scutellum 1.8 × its basal width; spine of scutellum short, distinctly obliquely upward, rounded apically; T1 3.4 × its apical width.

Female. Body length 7.2 mm; fore wing length 6.0 mm.

Head. Head width equal to its median length. Antennae 26-segmented, 0.7 × length of forewing. Temple behind eyes roundly narrowed in dorsal view. Transverse diameter of eye 1.2 × temple in dorsal view. Frons convex medially, with shallow depression near middle ocelli, without longitudinal carina. Antennal scrobe deep, with a weak carina on its lateral margin parallel to inner orbit of eye. Ocelli medium-sized, in triangle with base equal to its sides. POL: OD: OOL = 15: 13: 22. Face distinctly convex medially with coarse rugosity and dense pubescence. Area between antennal socket with a glabrous tubercle. Clypeus nearly pentagonal, equal to its maximum width, roundly convex, more or less flat medially and rugose with punctuation in basal half; thin apically, finely strigate, slightly rounded on apical margin; summit of covexity of clypeus smoothly rounded in lateral view. Distance between dorsal tentorial pits 1.7 × length between a tentorial pit and eye. Malar space 1.6 × basal width of mandible. Occipital carina complete.

Figure 8. 

Agriotypus yangae Tang, He & Chen, sp. nov. A antennae and wings B mesosoma, lateral aspect C lateral of pronotum D mesosoma, dorsal aspect E T1, dorsal aspect F head, front aspect G head, dorsal aspect H propodeum, dorsal aspect I metasoma (except T1), dorsal aspect J ovipositor sheath, lateral aspect.

Mesosoma. Pronotum with long and strong epomia, portion dorsal to pronotal furrow curved sigmoidally; lateral of pronotum with more than seven fine carinae dorso-posteriorly. Mesoscutum punctate-rugose; notaulus deep, meeting in apical 0.2. Scutellum funnel-shaped, 1.8 × its basal width, 1.1 × length of propodeum; basal half of scutellum with lateral carinae and punctuation-rugosity, convex medially, lateral margin of scutellum paralleled in basal 2/3, tapering towards to apex in apical 1/3; in lateral view scutellum less roundly curved medially, distinctly obliquely upward, apex more or less rounded, produced 10° dorsoposteriorly. Mesopleuron and metapleuron finely punctuate and pubescent; ecepicnemial carina strong, only extending to ventral-anterior of mesopleuron; mesopleural sulcus complete; sternaulus strong. Propodeum punctate-rugose; lateromedian longitudinal carinae weakly convergent posteriorly; lateral longitudinal carinae straight, complete and paralleled with lateromedian longitudinal carinae.

Wings. Fore wing with vein 1cu-a distad of M&RS, abscissa of vein M between 2rs-m and 2cu-m 1.25 × 2rs-m; hind wing with vein CU & cu-a intercepted by distal abscissa of CU interrupted at lower 0.15.

Metasoma. T1 3.4 × its apical width, 1.65 × length of propodeum; T1 finely irregularly rugose-striate, transverse rugose before spiracles, spiracles situated in basal 0.3, widest at level of spiracles; lateromedian carinae and dorsolateral carinae complete and strong, reaching to apex. T2 with a pair of short carinae medially and a lateral carina before spiracle; T2 densely finely strigose. T3 and following tergite densely punctulate. Ovipositor sheath 0.8 × length of hind basitarsus.

Colour. Black. Apical of four tergites, sternites and ovipositor reddish brown. Leg black. Fore wing faintly infuscate, with three slightly fuscous longitudinal bands: basal band near cu-a; substigmal band below stigma and distal band in distal 0.25 of forewing; hind wing more or less hyaline.

Male. Unknown.

Unknown.

China (Shaanxi).

This species is named in honour of Dr Yang Lianfang, the famous entomologist who studied the taxonomy of Trichoptera in China.