Research Article |
Corresponding author: John M. Heraty ( john.heraty@ucr.edu ) Academic editor: Petr Janšta
© 2017 Roger A. Burks, John M. Heraty, Jason Mottern, Chrysalyn Dominguez, Scott Heacox.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Burks RA, Heraty JM, Mottern J, Dominguez C, Heacox S (2017) Biting the bullet: revisionary notes on the Oraseminae of the Old World (Hymenoptera, Chalcidoidea, Eucharitidae). Journal of Hymenoptera Research 55: 139-188. https://doi.org/10.3897/jhr.55.11482
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Twelve genera of Oraseminae (Hymenoptera: Eucharitidae) are recognized in the Old World. The genus Orasema Cameron is now considered as found only in the New World, and the Old World species, previously treated as species groups, are now treated as distinct genera. Eight new genera are proposed: Australosema gen. n., Cymosema gen. n., Hayatosema gen. n., Ibitya gen. n., Ivieosema gen. n., Leiosema gen. n., Matantas gen. n., and Zuparka gen. n. The genus Losbanus Watanabe is given revised status from Orasema. Nine new species are proposed: Australosema politurae sp. n. (Australia), A. verghetta sp. n. (Australia), Cymosema capelina sp. n. (Australia), C. waterworthae sp. n. (Australia), Hayatosema plicator sp. n. (Vietnam), Ivieosema confluens sp. n. (Madagascar), Iv. limula sp. n. (Madagascar), Leiosema lesiolouna sp. n. (Republic of Congo), and Zuparka fisheri sp. n. (Madagascar). New combinations (from Orasema) include Australosema valgius (Walker, 1839), A. synempora (Heraty, 1994), Hayatosema assectator (Kerrich, 1963), H. delhiensis (Narendran & G. Kumar, 2005), H. initiator (Kerrich, 1963), H. kailashi (G. Kumar & Sureshan, 2015), H. nigra (Heraty, 1994), H. nirupama (G. Kumar & Narendran, 2007), H. siruvanica (G. Kumar & Sureshan, 2015), Ibitya communis (Risbec, 1952), Ib. seyrigi (Risbec, 1952), Ivieosema fraudulenta (Reichensperger, 1913), Iv. striatosoma (Heraty, 1994), Leiosema glabra (Heraty, 1994), Losbanus bouceki (Heraty, 1994), L. ishii (Heraty, 1994), L. promecea (Heraty, 1994), L. rugulosa (Heraty, 1994), Matantas koghisiana (Heraty, 1994), and Zuparka monomoria (Heraty, 2000). Losbanus uichancoi Ishii, 1932 is given revised status from Orasema. Distribution records, a new host association of Pheidole (Myrmicinae) for Ibitya communis, and an identification key to the Old World genera and species are provided.
Parasitoid, Formicidae, morphology, revision, Palaeotropical
Parasitoid, Formicidae , morphology, revision, Palaeotropical
Oraseminae constitutes one of the major lineages of the family Eucharitidae, with the estimated number of species approaching 200 (
The Old World species of Oraseminae were previously revised by
When using molecular data, the New World species of Orasema are consistently monophyletic (
In support of several upcoming phylogenetic studies, we have decided to recognize the problems inherent in the Old World Orasema. Given the wealth of morphological differences in the three other genera of Oraseminae, the associated biological differences, and the lack of morphological and molecular support for Orasemas.l., the best approach is to fragment the Old World species groups of Orasema into different genera and recognize only the monophyletic New World clade as Orasemasensu stricto. Herein we recognize 12 Old World genera, of which eight are new and one, Losbanus, is given revised status. Several new species are described, bringing the number of Old World species to 45, which is far overshadowed by the incredible diversity of Orasema in the New World.
List of Old World Oraseminae, with their geographic distribution and ant host genus. For a more complete list of synonymies and host information see
Genus | Species | Distribution | Host genus |
Australosema gen. n. (=valgius group) | A. politurae sp. n. | Australia | |
A. synempora (Heraty, 1994), comb. n. | Australia | ||
A. valgius (Walker, 1839), comb. n. * | Australia | Pheidole | |
A. verghetta sp. n. | Australia | ||
Cymosema gen. n. | C. capelina sp. n. | Australia | |
C. waterworthae sp. n. * | Australia | ||
Hayatosema gen. n. (=assectator group) |
H. assectator (Kerrich, 1963)* | Indo-Pacific | Pheidole |
H. delhiensis (Narendran & G. Kumar, 2005) | Indo-Pacific | ||
H. initiator (Kerrich, 1963) | Indo-Pacific | ||
H. kailashi (G. Kumar & Sureshan, 2015) | Indo-Pacific | ||
H. nigra (Heraty) | Ethiopian | ||
H. nirupama (G. Kumar & Narendran, 2007) | Indo-Pacific | ||
H. plicator sp. n. | Indo-Pacific | ||
H. siruvanica (G. Kumar & Sureshan, 2015) | Indo-Pacific | ||
Ibitya gen. n. (=communis group) | I. communis (Risbec, 1952), comb. n. * | Madagascar | Pheidole NR |
I. seyrigi (Risbec, 1952), comb. n. | Madagascar | ||
Indosema | I. indica Husain & Agarwal, 1983 * | India & Kenya | |
Ivieosema gen. n. (=striatosoma group) | I. confluens sp. n. | Madagascar | |
I. limula sp. n. | Madagascar | ||
I. fraudulenta (Reichensperger), comb. n. | Ethiopian | Pheidole | |
I. striatosoma (Heraty), comb. n. * | Ethiopian | ||
Leiosema gen. n. (=glabra group) | L. glabra (Heraty, 1994), comb. n. * | Ethiopian | |
L. lesiolouna sp. n. | Ethiopian | ||
Losbanus rev. stat. (=uichancoi group) | L. bouceki (Boucek), comb. n. | New Guinea | |
L. ishii (Heraty), comb. n. | Taiwan | ||
L. promecea (Heraty), comb. n. | New Guinea | ||
L. rugulosa (Heraty), comb. n. | New Guinea | ||
L. uichancoi Watanabe comb. n. * | Philippines | ||
Matantas gen. n. (=koghisiana group) | M. koghisiana (Heraty), comb. n. * | New Caledonia | |
Orasemorpha | O. didentata (Girault, 1940) | Australia | |
O. eribotes (Walker, 1839)* | Australian | Pheidole | |
O. goethei (Girault, 1934) | Australia | ||
O. myrmicae (Girault, 1936) | Australia | Pheidole | |
O. pytallus (Walker, 1846) | Australia | ||
O. sparsepilosa Heraty, 1994 | Australia | ||
O. tridentata (Girault, 1915) | Australia | Pheidole | |
O. varidentata (Girault, 1936) | Australian | ||
O. xeniades (Walker, 1839) | Australian | Pheidole | |
Timioderus | T. acuminatus Heraty, 1994 | Ethiopian | Pheidole |
T. coronula Heraty, 1994 | Ethiopian | ||
T. peridentatus Heraty, 1994 | Ethiopian | ||
T. coronula Heraty, 1994 | Ethiopian | ||
T. refringens Waterston, 1916 * | Ethiopian | ||
Zuparka gen. n. (=monomoria group) | Z. fisheri sp. n. | Madagascar | |
Z. monomoria (Heraty, 2000), comb. n. * | Madagascar | Monomorium |
Material was examined from
Morphological terms follow
In the following taxonomic treatments, we provide only new nomenclatorial acts or new information. We do not revisit the genera Indosema, Orasemorpha and Timioderus, which were revised in
1 | Transscutal articulation medially sinuate; axillae strongly advanced laterally beyond posterior margin of mesoscutum (Figs |
Cymosema gen. n....2 |
– | Transscutal articulation either absent medially (Fig. |
3 |
2 (1) | Mandibles minute and lacking distinct teeth (Fig. |
C. capelina sp. n. |
– | Mandibles 3/2 dentate with teeth narrow and weakly curved (Figs |
C. waterworthae sp. n. |
3 (1) | Upper frons with a large pit immediately below median ocellus (Fig. |
Ivieosema gen. n. (striatosoma-group of |
– | Upper frons without dorsal pit. Other characters variable | 7 |
4 (3) | Face reticulate. Transscutal articulation complete. Fore wing with moderately long setae; without swelling posterior to submarginal vein (Ethiopian) | 5 |
– | Face smooth (Figs |
6 |
5 (4) | Mesoscutellum reticulate dorsally | Ivieosema fraudulenta (Reichensperger) |
– | Mesoscutellum longitudinally striate | Ivieosema striatosoma (Heraty) |
6 (5) | Face smooth. Scape brown. Upper frons with two depressions between eye and antennal scrobe (Figs |
Ivieosema confluens sp. n. |
– | Face smooth to shallowly reticulate. Scape white. Upper frons with single transverse depression between eye and antennal scrobe (Fig. |
Ivieosema limula sp. n. |
7 (3) | Transscutal articulation (between mesoscutum and axilla) obliterated medially. Maxillary and labial palpi absent | 8 |
– | Transscutal articulation complete with a distinct transverse suture (Fig. |
9 |
8 (7) | Body metallic blue or green. Head and mesosoma strongly sculptured and either coriaceous or rugulose. Anellus present. Mandibles truncate or spatulate, maxilla small. Petiole not fused ventrally. Ovipositor curved ventrally. Body length at least 3.5 mm (Ethiopian) | Timioderus Waterston |
– | Body black or brown. Head and mesosoma almost smooth. Anellus absent. Mandibles absent, maxilla enlarged and lobate. Petiole fused ventrally. Ovipositor long and relatively straight. Body length about 2 mm (Kenya [New Record: UCRCENT 00478780, Olorgesailie National Monument, R. Copeland] and India) | Indosema Husain & Agarwal |
9 (7) | Petiole of female transverse, at most as broad as long. Petiole of male may be twice as long as broad, but then distal third or half supported ventrally by swollen anterior expansion of first gastral sternite (Gs1). Base of petiole lacking an anterior dorsal carina (Australian) | 10 |
– | Petiole of both sexes cylindrical and at least as long as broad (Figs |
11 |
10 (9) | Antennal flagellomeres cylindrical. Base of petiole narrowed to condyle | Orasemorpha Bouček |
– | Antennal flagellomeres lobate (Fig. |
Undescribed and unplaced teneral male (new genus 1) |
Antenna encased in exuvia, collected from base of ant-infested termite mound, very distinct from other genera and shows some similarities with Timioderus (Australia: QLD: Mareeba; |
||
11 (9) | Lower face lateral to clypeus finely reticulate (Fig. |
Hayatosema gen. n. (assectator -group of Heraty, 1994) |
– | Face variously sculptured, but if finely reticulate then propodeum with distinctly differentiated median channel (Fig. |
12 |
12 (11) | Antenna with 8–9 funiculars, if 7, then labrum with more than 7 digits, body black, and propodeal disc evenly sculptured (Ib. seyrigi, Madagascar). Ocellar-ocular sulcus usually distinct. Propodeal disc evenly sculptured, rarely smooth. Fore wing often without speculum | 13 |
– | Antenna with 7 funiculars, if labrum with more than 7 digits, then body metallic blue green and propodeal disc smooth laterally. Ocellar-ocular sulcus absent. Fore wing setation variable | 14 |
13 (12) | Face smooth laterally (Fig. |
Ibitya gen. n. (communis -group of Heraty, 2000; 2 species described) |
– | Face evenly sculptured laterally. Labrum with 4 digits (one undescribed Australian species with 6). Antenna with 8–9 funiculars (Paleotropical excluding Madagascar) | Losbanus rev. stat. (uichancoi-group of Heraty, 1994; 5 species) |
14 (12) | Propodeal disc evenly sculptured | 15 |
– | Propodeal disc smooth laterally, usually with a distinct median longitudinal channel with strong areolate sculpture (Figs |
17 |
15 (13) | Face and frenum completely smooth (Figs |
Leiosema gen. n. (glabra-group of Heraty, 1994)...16 |
– | Face completely and evenly reticulate; scutellar disc and frenum rugose-reticulate (Fig. |
Undescribed and unplaced teneral male (new genus 2) |
Antenna encased in exuvia, no ant host information, close to Australosema but very distinct from other species (Australia: QLD: Thornton Peak, QM:UCRCENT00241816). | ||
16 (15) | Mandibles 3:3 dentate (Fig. |
Leiosema lesiolouna sp. n. |
– | Mandibles 3:2 dentate. Pronotal neck not extended and smooth. Scutellar disc at most with shallow reticulate sculpture anteriorly, weakly reticulate or smooth posteriorly (Figs |
Leiosema glabra (Heraty) |
17 (14) | Labrum with 6–8 digits. Face smooth (Papua New Guinea [undescribed] and New Caledonia) | Matantas gen. n. (koghisiana-group of Heraty, 1994), M. koghisiana (Heraty) |
– | Labrum with 4 digits. Face smooth or reticulate | 18 |
18 (17) | Antecostal sulcus present, dividing first gastral sternite and separating off a distinct acrosternite (Figs |
Australosema gen. n. (valgius-group of Heraty, 1994)...19 |
– | Antecostal sulcus absent (first gastral sternite smooth and uninterrupted). Face entirely smooth. Scrobes with parallel median channels (Fig. |
Zuparka gen. n. (monomoria-group of Heraty, 2000)...22 |
19 (18) | Face entirely smooth (Fig. |
A. politurae sp. n. |
– | Face with at least frons with reticulate sculpture (Fig. |
20 |
20 (19) | Frenum with median longitudinal groove (Fig. |
A. verghetta sp. n. |
_ | Frenum without median longitudinal groove. Scape yellow or dark brown | 21 |
21 (20) | Lateral lobe of mesoscutum and axilla smooth and polished | A. synempora (Heraty) |
– | Lateral lobe and axilla coriaceous to rugose, axilla weakly carinate with surface imbricate to reticulate. Scape yellow to dark brown (see |
A. valgius (Walker) |
22 (18) | Face entirely smooth (Figs |
Z. fisheri sp. n. |
– | Frons weakly coriaceous (Fig. |
Z. monomoria (Heraty) |
Eucharis valgius Walker: 412–414.
Random combination of letters and referring to the distribution; gender feminine.
Defined by
Separated from Orasemas.s. by a relatively weak or absent basal petiolar flange, and smooth lateral areas on the propodeal disc in combination with a rugose-areolate or reticulate median channel. Distinguished from other Old World genera by the head subtriangular in frontal view (Fig.
Similar genera that have a smooth face and smooth lateral regions on the propodeal disc include Leiosema, Matantas, and Zuparka. Australosema is distinguished from Leiosema and Zuparka by several features, including the absence of a parallel channeled scrobes with dorsal depressions, 3–4 large teeth on the ventral (first) valvula of the ovipositor instead of 9–10 minute teeth, and absence of ventral pores on the male scape. It differs from Matantas primarily by having a 4-digitate rather than 6–8 digitate labrum.
Myrmicinae: Pheidole (
Four species. Australia including Tasmania.
Latin noun in genitive case meaning “a polishing,” referring to the smooth face.
Differs from most Australosema by having an almost entirely smooth face, with the frons not swollen and the dorsal occipital carina weak. It differs from A. synempora in several features, including having a completely sculptured axilla and mesoscutal lateral lobe and a less densely setose fore wing. Matantas koghisiana also has a smooth face and frenum, but A. politurae has four labral digits and a more elongate mesosoma. Additional features include the lateral lobe of mesoscutum almost entirely rugose-reticulate, smooth near posterior edge; axilla reticulate (Fig.
Length 2.2–3 mm. Head and mesosoma dark metallic green, petiole black, gaster brown with faint metallic luster. Scape, pedicel, anellus yellowish, funiculars and clava brown. Coxae metallic green basally, becoming yellowish apically, femora pale brown except yellowish at tips, remainder of leg yellowish. Fore wing venation pale brown, setae dark. Gaster brown to dark brown, with metallic luster.
Head (Figs
Mesosoma (Figs
Metasoma. Petiole 4.0–4.8× as long as broad, 1.6–1.7× as long as metacoxa, finely longitudinally rugose-reticulate, with some incomplete longitudinal carinae laterally and ventrally (Fig.
Length 2.1–2.6 mm. Antennal flagellum (Fig.
Holotype: Australia: QLD: Mt. Glorious, 27°19'54"S, 152°45'29"E, 7-13.ii.1998, N. Power, Malaise trap [1♀,
A single specimen (gaster missing, likely female; UCRCENT0092152, D0161) from southeast QLD is molecularly similar and is placed as the sister of A. politurae. It is distinct by having a completely smooth face with a strongly swollen frons. Two other series (all males from QLD) likely represent another two species that share similar features to the D0161 specimen. All specimens have a 4-digitate labrum, 7 funiculars, a completely smooth face, and a strongly carinate dorsal occipital margin.
Australosema politurae. Paratype female: 1 habitus, lateral 2 head, anterior 3 antennae, ventral 4 mesosoma, dorsal 5 propodeum and petiole, oblique dorsal. Paratype male: 6 antennae, lateral. acl = anteclypeus; acr = acrosternite; acs = antecostal sulcus; apc = anterior petiolar carina; ax = axilla; cal = callus; cly = clypeus; F = flagellomere; fr = frons; Fu = funicular; F1/an = anellus; llm = mesoscutal lateral lobe; lpr = lateral propodeal disc; mlm = mesoscutal midlobe; mpr = median propodeal disc; pet = petiole; not = notauli; scd = scutellar disc.
Italian noun used in heraldry to refer to a line along the middle, referring to the longitudinal scutellar groove present in females.
Differs from other Australosema by the presence of a longitudinal median groove on the frenum of females, and similar to some of the included species, the frons is rugose-reticulate and the lower face smooth. The female also has F2 much narrower than F4, not longer than F3, with few longitudinal sensilla (Fig.
Length 2.1–2.6 mm. Head and mesosoma metallic green to blue-green, metasoma brown with metallic green luster. Scape and pedicel dark brown; anellus pale brown; flagellum dark brown. Coxae metallic green basally, becoming brownish to yellowish apically, remainder of leg yellowish except femora mostly dark brown and with yellowish tips. Fore wing venation brown, setae dark. Gaster metallic green.
Head (Figs
Mesosoma (Figs
Metasoma (Figs
Length 2.4–2.6 mm. Scape dark brown for most or all of its length (Fig.
Holotype: Australia: SA: Mt. Barker, 511m, 35°04'00"S, 138°55'17"E, 22-23.i.1999, J. Heraty, Eucalyptus scrub [1♀,
Australosema verghetta. Paratype female: 7 habitus, lateral 8 head, anterior 9 antennae, dorsal 10 mesosoma, dorsal; 11 propodeum and petiole, dorsal 12 mesosoma, lateral. acs = antecostal sulcus; apc = anterior petiolar carina; axlg = axiullar groove; cal = callus; F = flagellomere; frg = frenal groove; lpr = lateral propodeal disc; not = notaulix; SSS = scutoscutellar sulcus; tsa = transscutal articulation.
Cymosema waterworthae Burks & Mottern sp. n.
Based on the Greek κύμα (kyma) for wave and referring to the sinuate transscutal articulation; gender feminine.
The two species in this group are each known from single specimens collected in Australia, both among the smallest known Eucharitidae. They differ from previously described species of Orasema by having a cylindrical ventrally fused petiole that tapers basally to the articulating condyle (Figs
Recognized from most Oraseminae by the sinuate closely associated transscutal articulation, minute discoidal anellus, reduced mouthparts that are at most bidentate and medially directed (not falcate), basally tapered petiole and elongate slightly curved ovipositor. Distinguished from other Old World genera by the head transverse in frontal view and mostly smooth (Figs
Unknown.
Two species. Australia (Queensland and Western Australia).
Noun from Spanish, meaning wide-brimmed floppy hat, referring to the head shape.
Mandibles highly reduced, broader than long and truncate. Funiculars tapering to apex. Frons smooth. Submarginal vein with several long setae, fore wing with distinct marginal fringe.
Length 1.3 mm. Head and mesosoma dark brown with very faint metallic luster. Scape, pedicel and anellus pale brown, funiculars and clava brown. Leg brown to milky brown, with slightly darker areas on the coxa basally, femur except at its tips, tibia subbasally, and last two tarsomeres. Fore wing hyaline; venation pale brown, setae dark. Gaster brown with faint metallic luster.
Head (Figs
Mesosoma (Figs
Metasoma. Petiole 0.7× as long as metacoxa, 1.8× as long as broad, smooth except for longitudinal carinae, including a median carina dorsally, narrowing anteriorly to abruptly expand at the anterior condyle, without anterior transverse carina, ventrally smooth (Fig.
Unknown.
Holotype: Australia: Queensland: Heathlands, 11°27'00"S, 142°21'00"E, 25.vii-18.viii.1992, P. Zborowski, J. Cardale, Malaise trap [1♀,
Cymosema capelina. Holotype female: 15 habitus, lateral 16 head, anterior 17 antennae, lateral 18 mesosoma, lateral 19 mesosoma, dorsal 20 propodeum and petiole, oblique dorsal. ax = axilla; F = flagellomere; md = mandible; pet = petiole; prp = propodeum; tsa = transscutal articulation.
Named in honor of the collector, Rebeccah Waterworth.
Mandibles bidentate and overlapping, teeth of equal length and projecting medially. Funiculars cylindrical. Frons weakly reticulate. Submarginal vein bare, fore wing without marginal fringe.
Length 1.4 mm. Head, mesosoma, and metasoma brown with metallic luster. Scape yellowish-brown, pedicel and flagellum brown. Legs brown, with tibial apices, and first four tarsomeres pale brown. Fore wing hyaline; venation pale brown, setae dark. Gaster brown with faint metallic luster.
Head (Figs
Mesosoma (Figs
Metasoma (Figs
Unknown.
Holotype: Australia: Western Australia: D’Entrecasteaux N.P., Coastal Survivors Walk, 105m, 34°50'19"S, 116°00'17"E, 8.xii.2009, R. Waterworth, sweep [1♀,
Orasema assectator (Kerrich, 1963: 367–368). Heraty, 1994: 74–75, figs 111–112.
Named after Mohammad Hayat of Aligarh Muslim University; gender feminine.
This group and three of its seven previously described species were characterized as the Orasema assectator-group by
Distinguished from other Old World genera by the head subtriangular in frontal view (Fig.
Hayatosema initiator (Kerrich) reared from Pheidole (
Four species. Ethiopian and Indo-Pacific (Heraty, 1994).
A noun meaning “one who folds clothing,” derived from the Latin verb plicare (to fold). Refers to the rough propodeal and petiolar surface sculpture.
Flagellum with 7 funiculars (Fig.
Length 3.5 mm. Head, mesosoma, and petiole black with slight metallic blue to purple luster. Antenna pale yellow. Coxae black to dark brown, with faint metallic purple luster; femora dark brown except white at tips; tibiae and tarsi pale yellow. Fore wing venation yellowish-white. Gaster dark brown.
Head (Figs
Mesosoma (Figs
Metasoma (Figs
Unknown.
Holotype: Vietnam: Thua Thien-Hue: Bach Ma Natl. Pk. Parashorea Trail, 9 km from park entrance, 100m, 16°12'02.4"N, 107°50'49.6"E, 26.v-13.vi.2001, D.C. Darling, N. Tatarnic, B. Hubley, Dipterocarp forest-closed canopy, Malaise trap (fine) [1♀,
Orasema communis Risbec, 1952: 412–414.
Named after one of the Madagascar collecting localities, Ibity; gender feminine.
Separated from other Oraseminae by having the apex of the first valvula of the ovipositor with sinuate ridges as opposed to distinct lateral teeth. Distinguished from other Old World genera by the head subtriangular in frontal view; face entirely smooth laterally, scrobal depression evenly impressed and lacking parallel channels and dorsal foveae; dorsal occipital margin abrupt and rounded or carinate; antenna with 7 or 8 funiculars (11–12 antennal segments); labrum with 8-10 digits (rarely 5) (Fig.
Myrmicinae: Ibitya communis reared from Pheidole veteratrix Forel.
Madagascar.
Orasema communis Risbec, 1952: 412–414. Type data: Madagascar: Bekily. Lectotype male (examined), by subsequent designation Heraty, 1994: 59. Type depository: MNHP. Citations: Heraty, 1994: 59-61 (subsequent description, both sexes, illustrated); Heraty, 2002: 51 (catalog).
A new host record is made for Pheidole veteratrix Forel based on a single collection that included a soldier gripping the wing of an adult I. communis, 5 female and 1 male pupae, and two unparasitized ant larvae. The pupa has the basic features of an Orasema, but with additional pustulate swellings not found in other taxa.
(Fig.
Myrmicinae: Pheidole veteratrix.
Madagascar: 45 km S Ambalavao, 785m, 22°13'00"S, 47°01'00"E, 2.x.1993, B.L. Fisher, nest, rotten log rainforest, ex: Pheidole veteratrix [1♂, 1♀, 6♀ pupae, 1 ♂ pupa: CASC: UCRCENT00417452,
Madagascar.
Orasema
seyrigi
Risbec, 1952: 414–416. Type data: Madagascar: Bekily. Holotype female (examined), by monotypy. Type depository: MNHN. Citations:
The redescription and illustrations provided by
A single male of a different species (Reserve Betampona, from sifted litter; CAS, UCRCENT 00417456) also has an antenna with 11 segments and 7 funiculars, a labrum with 7 digits, and a long petiole about as long as the hind femur. The male shares many features with I. seyrigi, and may be the same species, however there are dramatic differences in especially the coarsely rugose scutellar disc.
Madagascar: Fianarantsoa Prov.: Parc National Ranomafanae, radio tower at forest edge, 1130m, 21°15'03"S, 47°24'26"E, 6-17.vii.2003, R. Harin’Hala & M. Irwin, mixed tropical forest, Malaise trap (1♀, CAS: UCRCENT00417549).
Madagascar.
Orasema striatosoma Heraty, 1994: 68–70, figs 98–105.
Named after Michael Ivie of Montana State University; gender feminine.
Defined by
Separated from other Oraseminae by the deep sharply impressed pit just below the median ocellus (Fig.
Myrmicinae: Ivieosema fraudulenta reared from Pheidole megacephala Fabricius (
Ethiopian and Malagasy regions.
Ivieosema confluens. Paratype female: 38 head and mesosoma, lateral 39 head, anterior 40 antenna, medial 41 mesosoma, lateral 42 mesosoma, dorsal 43 mesosoma, posterior. dfd = dorsal frontal depression; F1/an = anellus; lg = longitudinal groove; sod = subocellar depression; tsa = transscutal articulation.
Ivieosema limula. Holotype female: 49 habitus, lateral 50 head, anterior 51 antenna, lateral 52 mesosoma, lateral 53 mesosoma, dorsal 54 ovipositor, lateral. dfd = dorsal frontal depression; F1/an = anellus; lg = longitudinal groove; mts = metascutellum; tsa = transscutal articulation.
Latin noun meaning “a place where rivers meet,” referring to the mesosomal surface sculpture.
Recognized from other Orasema and African Ivieosema by the fore wing lacking setae and with a medial longitudinal fold. Distinguished from I. limulus by the smooth face, frons with 2 depressions between eye and antennal scrobe (Fig.
Length 2.8 mm. Head and mesosoma dark brown. Scape, pedicel, and anellus light brown, rest of flagellum darker brown. Coxae, trochanters, most of femora and last tarsomere dark brown; femoral apices, tibiae and tarsi pale white yellow with last tarsomere brown. Fore wing venation glossy and brown. Gaster brown.
Head (Figs
Mesosoma (Figs
Metasoma (Fig.
(Figs
Madagascar: Toliara Prov.: 18 km NNW Betroke, 825m, 23°09'48"S, 45°58'07"E, 24.x-4.xii.1994, M.A.Ivie & D.A.Pollock, FIT [1♂, UNMO: UCRCENT00435300], deposited in
Latin noun meaning “small file (carpenter’s or sculptor’s tool),” referring to the finely striate mesosomal surface sculpture.
Recognized from other Orasema and African Ivieosema by the fore wing lacking setae and presence of a medial longitudinal fold. Distinguished from I. confluens by the reticulate facial sculpture, frons with a single depression between eye and antennal scrobe (Fig.
Length 3.1 mm. Head and mesosoma almost entirely dark brown, without metallic luster; pronotum ventrally, prepectus, and acropleuron yellowish-brown. Scape white; pedicel and flagellum pale brown. Coxae and most of femora pale brown; trochanters, femoral apices, tibiae, and tarsi white. Fore wing venation glossy and milky brown. Gaster brown to dark brown.
Head (Figs
Mesosoma (Figs
Metasoma (Fig.
Unknown.
Holotype: Madagascar: Toliara Prov: Manderano, 70m, 23°31'39"S, 44°05'18"E, 23.vi-28.vii.2002, Frontier Wilderness Project, gallery forest at the edge of marsh, 5m from road, Malaise trap [1♀, CAS: CASENT2022276], deposited in CAS.
Orasema glabra Heraty, 1994: 72–73, figs 119, 125–128, 130, 132.
Combination of the Greek λεῖος (leios) for smooth and a contraction of Orasema, referring to the smooth and polished head and frenum; gender feminine.
Originally treated within Orasema as the glabra group by
Separated from Orasema by the presence of male scape glands (pores) (Fig.
Sub-saharan Africa (Democratic Republic of the Congo, South Africa, Tanzania, Zimbabwe), and Yemen.
Named for the collection locality of the holotype.
The female is unknown, but the male is easily distinguished by the 3:3 dentate mandibles (Fig.
Length 1.6 mm. Head and mesosoma blue. Scape brown; pedicel brown; anellus yellowish brown; flagellum brown. Mandible yellow, ventral mandibular setae acute; maxilla and labium yellowish brown. Coxae dark blue; fore and mid femur mostly brown, apically yellowish; hind femur mostly dark brown to black, apically yellow; tibiae yellow, but with hind tibia slightly darker basally. Fore wing hyaline; venation clear. Petiole same color as mesosoma; gaster dark brown; acrosternite same color as petiole.
Head (Figs
Mesosoma (Figs
Metasoma. Petiole cylindrical, linear in profile, 4.6× as long as broad, 1.7× as long as hind coxa, reticulate, anterior carina strong, lateral margin rounded, ventral sulcus present with margins narrowly separated. Antecostal sulcus rugulose; acrosternite posteriorly angulate, raised and smooth medially and laterally broadly impressed and reticulate. Genitalia protruding: parameres elongate, digitus broad and flattened with 4 marginal spines.
unknown.
Republic of Congo: Pool Dept.: Iboubikro, Lesio-Louna Pk., 340m, 3°16'12"S, 15°28'16"E, 23.vii.2008, Sharkey & Braet, Malaise trap #3 [1♂,
Orasema
glabra
Heraty, 1994: 72–73. Holotype, South Africa, Transvaal [♀,
Both sexes with mandibles 3:2 dentate, mesoscutal midlobe and scutellar disc weakly reticulate, becoming smooth posteriorly (Figs
The few specimens that are known were collected across a broad geographic range from Yemen to South Africa. Females from South Africa, Yemen and Zimbabwe all have a pale brown scape and a completely yellow fore and mid tibia, whereas the female from Tanzania has an almost black scape and all tibiae are basally dark brown. Males generally have the scape and tibiae dark brown, but again these are much darker in specimens from Tanzania. In the description below, the primary measurements are for what appear to be typical L. glabra specimens from South Africa and Zimbabwe. There are a few minor ratio differences for specimens from Tanzania and Yemen (included in parentheses) that are outside of the range of variation from the typical L. glabra specimens. While these are currently considered to be one species, as more material becomes available, additional species will likely need to be recognized. An additional collection from Gambia shows variation that is likely representative of another species that has a more distinctly reticulate mesoscutellum, but we do not treat this as there seems to be a need to collect more material across Africa to assess the patterns of variation.
Length 1.8–2.4 mm. Head and mesosoma dark blue, violet or green. Scape dark brown to black; pedicel black; anellus brown; flagellum black. Mandibles dark brown; maxilla and labium brown. Coxae dark blue; femora mostly dark brown to black, with tips pale; fore and mid tibia yellow to almost completely black with pale apex; hind femur dark brown to black with metallic reflections; hind tibia mostly dark brown to black, tips pale. Fore wing hyaline; venation pale brown. Petiole and acrosternite same as mesosoma; gaster dark metallic.
Head (Figs
Mesosoma (Figs
Metasoma. Petiole 2.6–2.9× as long as broad, 1.2–1.4× as long as hind coxa, lateral margin rounded with only short lateral carina in basal 1/4. Acrosternite posteriorly rounded with rugulose sculpture, antecostal sulcus rugulose.
(redescription) (Fig.
Head 1.0–1.1x as broad as high; eyes separated by 1.3–1.5× eye height; malar space 0.4–0.6× eye height. Flagellum length 0.8–1.0× head height (0.9–1.0 in type material); flagellum with 7 funiculars, anellus disc-shaped, F2 1.1–1.4× as long as broad, 1.1–1.2× as long as F3.
Mesosoma 1.6–2.1x as long as high. Fore wing 2.3–2.6× as long as broad.
Metasoma. Petiole 1.5–2.1× as long as broad, 0.9–1.3× as long as hind coxa, apical setae of hypopygium with 2–4 long hairs clustered on each side of midline. Ovipositor slightly curved cephalad; first (ventral) valvula with 6–10 small, narrowly separated teeth, second (dorsal) valvula with 6–7 annuli that are broadly separated dorsally by smooth area; subapical carina present; third valvula separated.
South Africa: Eastern Cape: Port St. John, 31°37'00"S, 29°32'00"E, i.1974, A. Watsham [1♂,
Orasema near glabra: Gambia: Banjul: Kotu Stream, 3m, 13°27'41"N, 16°42'13"W, 14.xi.1981, K-J. Hedqvist [5♂ 4♀, BMNH: UCRCENT00309860–68]. Kotu Stream, 4m, 13°27'42"N, 16°42'13"W, 18.xi.1981, K-J. Hedqvist [1♀, BMNH: UCRCENT00309871]. North Bank Division: Upper Baddibu, Farafenni, 13m, 13°34'03"N, 15°44'56"W, 1-2.xi.1977, Michael Söderlund, Meadow (mostly resorts) with baobab [1♂, BMNH: UCRCENT00309873]. Western Division: Kombo St Mary, Bakau, 10m, 13°28'47"N, 16°40'14"W, 28-29.x.1977, Michael Söderlund, shore meadow [1♂, BMNH: UCRCENT00309872]. Kombo St Mary, Sara Job Kunda, 25m, 13°26'40"N, 16°42'46"E, 29.x.1977, Michael Söderlund, grassland with palms [1♂, BMNH: UCRCENT00309859].
Losbanus
Ishii, 1932: 210. Type species: Losbanus uichancoi
Losbanus ; Hedqvist, 1978: 229. Short redescription and key to species, most of which are now attributed to Neolosbanus (Eucharitinae).
Losbanus ; Watanabe, 1958, 26. Subsequent description.
Gollumiella ; Bouček, 1988: 521. Incorrectly placed as senior synonym of Gollumiella.
Orasema ; Heraty, 1992: 586. Synonymy based on transfer of L. uichancoi to Orasema.
Orasema ; Heraty, 1994: 54–57. Description and treatment as Orasema uichancoi-group.
Orasema ; Heraty, 2000: 378. Separation of communis and uichancoi species groups.
Losbanus was first described for a single species, L. uichancoi.
Separated from most Orasema and other Oraseminae by having 8-9 funiculars versus 7, a weak basal petiolar flange, usually a distinct ocellar-ocular sulcus, 4-7 digitate labrum, and the callar region usually with several long setae (African male with a single long seta). Distinguished from other Old World genera by the head broadly subtriangular to transverse in frontal view; face smooth or sculptured; presence of an ocellar-ocular sulcus in all but the Australian species; scrobal depression evenly impressed and lacking parallel channels and dorsal foveae; dorsal occipital margin abrupt and rounded or carinate; funicle 8–9 segmented; labrum with 4–7 digits (usually 4); mesonotum appearing bare, at most with minute setae; mesoscutal lateral lobes and frenum sculptured or smooth; transscutal articulation complete and only slightly sinuate; propodeal disc evenly sculptured, smooth laterally only in the Australian species; prepectus foveate and tightly articulated with pronotum ventrally; fore wing with basal area and specular area pilose or bare, wing disc with dense long setae; postmarginal vein much longer than stigmal vein and reaching over half distance to wing apex; petiole base truncate with weak basal flange; antecostal sulcus broad and smooth or foveate; first valvula of ovipositor with 3-5 lateral teeth, subapical teeth sometimes formed by oblique ridges. Male scape lacking ventral pores.
The oviposition habits and morphology of the egg and first instar were described by
Unknown.
Five species described from southeast Asia (Heraty, 1994). Paleotropical (Australia: Queensland (undescribed); Republic of Congo (undescribed), Papua New Guinea, Philippines, Taiwan).
Orasema koghisiana Heraty, 1994: 71–72, figs 107–108, 110, 189–190, 211–212, 219, 236, 247.
Named after one of the New Caledonia collecting localities, Matanta; gender feminine.
Defined by
Separated from Orasema by the combination of smooth lateral areas on the propodeal disc in combination with a rugose-areolate or reticulate median channel, smooth face, and labrum with 6–8 digits. Distinguished from other Old World genera by the head subtriangular in frontal view; face smooth and relatively flattened, scrobal depression evenly impressed and lacking parallel channels or dorsal foveae; dorsal occipital margin abrupt and rounded, at most with a weak dorsal carina; funicle 7-segmented; labrum with 6–8 digits; mesonotum appearing bare, at most with minute setae; mesoscutal lateral lobes and frenum smooth; transscutal articulation complete and relatively straight; propodeal disc smooth with a broad sculptured median channel; prepectus foveate and tightly articulated with pronotum ventrally; fore wing with basal area and specular area bare, wing disc setae relatively long and dense; postmarginal vein much longer than stigmal vein and reaching about half distance to wing apex; petiole base truncate with strong basal flange; antecostal sulcus present and smooth; first valvula of ovipositor with 3 or 4 lateral teeth. Male scape lacking ventral pores.
Unknown.
One species described. New Caledonia (another undescribed species from Vanuatu,
Zuparka monomoria Heraty, 2000: 375–378, figs 1–7.
Named after Robert Zuparko of the California Academy of Sciences; gender feminine.
Defined by
Separated from other Oraseminae by the presence of ventral pores on the male scape, 4-digitate labrum (Figs
Myrmicinae: Z. monomoria reared from Monomorium sp. (
Madagascar.
Leiosema glabra. Male: 56 antenna, lateral (Tanzania, TZ) 57 head, frontal, (Yemen) 58 head, oblique (TZ). Female holotype 59 head and mesosoma, dorsal; Male: 60 head and mesosoma, dorsal (South Africa) 63 mesosoma, lateral (SA) 65 wings, dorsal (TZ) 66 stigmal vein (TZ) 67 propodeum and petiole, oblique (TZ). Leiosema lesiolouna. Holotype male: 61 head and mesosoma, dorsal 62 head, oblique 64 head and mesosoma, lateral.acr = acrosternite; apc = anterior petiolar carina; F = flagellomere; frn = frenum; lbr = labrum; no1 = pronotum; scp = scape; vp = ventral pores.
Zuparka fisheri. Paratype female: 68 habitus, lateral 69 head, anterior 70 mesosoma, lateral 71 mesosoma, oblique dorsal 72 mesosoma, anterior 73 propodeum, oblique dorsal. apc = anterior petiolar carina; cal = callus; frn = frenum; lpr; lateral propodeal disc; mts = metascutellum; sct = mesoscutellum; tsa = transscutal articulation.
Zuparka fisheri. Paratype female: 74 fore wing 75 petiolar base 76 ovipositor. Paratype male: 77 antenna 78 pores on scape ventrally. ads = anterodorsal swelling of petiole; apc = anterior petiolar carina; dv = dorsal (2nd) valvula; F = flagellomere; F1/an = anellus; lhp = petiolar lateral hair patch; vp = ventral pore of scape; pmv = postmarginal vein; stv = stignal vein; vv = ventral (1st) valvula.
Named after Brian Fisher of the California Academy of Sciences for his tremendous collecting efforts that have contributed to the understanding of the fauna of Madagascar.
Face entirely smooth. Scutellum vaulted anterior to frenum and medially depressed. Propodeal disc laterally smooth. This species resembles Zuparka monomoria, but can be easily differentiated by the presence of an elevated medial region of the scutellar disc (Fig.
Length 1.8–2.4 mm. Head and mesosoma, including mid and hind coxae and petiole, dark bluish-black; fore coxae dark bluish-black and yellow apically. Flagellum brown; scape, pedicel and anellus yellow to brown. Legs beyond coxa yellow with femora medially brown and tarsomeres apically pale brown. Gaster dark brown. Wings hyaline, venation pale yellowish-brown.
Head (Figs
Mesosoma (Figs
Metasoma (Figs
Length 1.7–1.8 mm. Scape yellow to brown, flagellomeres brown. Fore coxa bluish-black and brown apically; legs yellow to yellowish-brown, hind femur darker with yellow tips, tarsomeres yellow to brown. Scape ventroapically with dense minute pores. Gs8 apically strongly convex with sparse ventral hairs; Ms8 densely setose near cerci. Genitalia with broad flattened parameres with two subapical setae, digiti with 4 lateral spines; aedeagus subapically expanded (Fig.
Madagascar: Fianarantsoa Prov.: Parc National Ranomafana, Belle Vue at Talatakely, 1020m, 21°15'59"S, 47°25'07"E, 2-10.i.2002, R. Harin’ Hala, secondary tropical forest, Malaise trap [1♀, CASC: UCRCENT00417485]. Paratypes: Madagascar: Antananarivo Prov.: 3 km 41 degrees NE Andranomay, 11.5 km 147 degrees SSE Anjozorobe, 1300m, 18°28'24"S, 47°57'36"E, 5-13.xii.2000, Fisher, Griswold et al., montane rainforest, Malaise trap [1♂, CASC: UCRCENT00417369]. Antsiranana Prov.: Parc National Montagne d’Ambre, 960m, 12°30'52"S, 49°10'53"E, 12.ii-4.iii.2001, 4-19.iii.2001, R. Harin’Hala, Malaise [5♂ 1♀, CASC: UCRCENT00175169, UCRCENT00278241–45]. Parc National Montagne d’Ambre, 1125m, 12°31'13"S, 49°10'45"E, 29.i-11.ii.2001, 5-21.iv.2001, 14-30.v.2001, 30.v-6.vi.2001, R. Harin’Hala, Malaise trap [4♂ 1♀, CASC: CASENT02014649, CASENT02015483, CASENT02015488, UCRCENT00417343, UCRCENT00417345]. Sakalava Beach, 10m, 12°15'46"S, 49°23'51"E, 16-31.v.2001, R. Harin’ Hala, dwarf littoral forest, sandy trail, Malaise trap [1♂, CASC: UCRCENT00417339]. Fianarantsoa Prov.: Parc National Ranomafana, Belle Vue at Talatakely, 1020m, 21°15'59"S, 47°25'13"E, 28.xi-6.xii.2001, M. Irwin & R. Harin’Hala, secondary tropical forest, Malaise Trap [1♂ 1♀, CASC: UCRCENT00417551, UCRCENT00417553]. Parc National Ranomafana, radio tower at forest edge, 1130m, 21°15'03"S, 47°24'26"E, 16.x-8.xi.2001, 24.v-4.vi.2002, 7-17.v.2003, R. Harin’ Hala, mixed tropical forest, Malaise [2♂ 4♀, CASC: UCRCENT00417386–487, UCRCENT00417388, UCRCENT00417489, UCRCENT00417490, UCRCENT00417492]. Parc National Ranomafana, Vohiparara at broken bridge, 1110m, 21°13'34"S, 47°22'11"E, 21-28.i.2002, 4-12.ii.2002, M. Irwin and R. Harin’Hala, high altitude rain forest, Malaise trap [1♂ 2♀, CASC: UCRCENT00417509–10, UCRCENT00417537]. Toamasina Prov.: bot. garden near entrance to Andasibe National Park, 1025m, 18°55'35"S, 48°24'28"E, 16-24.x.2001, 24.x-1.xi.2001, 1-7.xi.2001, R. Harin’Hala, tropical forest, Malaise Trap [2♂ 2♀, CASC: UCRCENT00417486, UCRCENT00417497, UCRCENT00417513, UCRCENT00417538].
Madagascar: Antsiranana Prov.: Parc National Montagna d’Ambre, 1125m, 12°31'13"S, 49°10'45"E, 12.ii-4.iii.2001, 19.iii-5.iv.2001, 12-14.v.2001, R. Harin’Hala, Malaise trap [3♀ 1♂, CASC: CASENT02015492, UCRCENT00417340, UCRCENT00417344, UCRCENT00417346]. Sakalava Beach, 10m, 12°15'46"S, 49°23'51"E, 16-31.v.2001, R. Harin’ Hala, dwarf littoral forest, sandy trail, Malaise trap [1♀, CASC: UCRCENT00417338].
Orasema monomoria Heraty, 2000: 376–378.
Frons weakly coriaceous. Scutellum evenly rounded anterior to frenum. Propodeal disc laterally weakly sculptured.
Previously described from a single female that had recently emerged. The new material examined fits the description of the single female.
Madagascar.
Madagascar: Fianarantsoa Prov.: Res. Andringitra, 8.5 km SE of Antanitotsy, 1990m, 22°10'00"S, 46°58'00"E, 6.iii.1997, Sylvian, montane rainforest [1♀,
We would like to thank Gary Gibson and Lisa Bearss for imaging the holotype of Orasema glabra. We would like to thank Austin Baker, Chris Darling and Javier Torréns for comments on earlier drafts of the manuscript. This research was supported by NSF DEB 1257733 and UCR Hatch grants to JMH. Mention of trade names or commercial products in this publication is solely for the purpose of providing specific information and does not imply recommendation or endorsement by the USDA; USDA is an equal opportunity provider and employer.