Eopompilus pseudominor Loktionov, Lelej & Xu, 2017

Loktionov, Valery M., Lelej, Arkady S. & Xu, Zaifu, 2017, Review of the genus Eopompilus Gussakovskij, 1932 (Hymenoptera: Pompilidae) with the description of new species from China, Zootaxa 4277 (3), pp. 413-426 : 419-422

Eopompilus pseudominor Loktionov, Lelej & Xu , sp. nov.

( Figs 8–14 , 41, 42 )

Type material. Holotype, ♀, " China, Yunnan, Gaoligongshan National Nature Reserve, 01–18.VIII.2005 ( Juanjuan Ma ), 2016001892" [ SCAU].

Diagnosis. Female. Female of new species can be easily separated from all other species by having clypeus with deep concavity along lateral margin ( Figs 11, 12 ); disc of propodeum with distinct soft dense punctures ( Fig. 13 ); vein cu-a of forewing distinctly arched and vein M strongly arched ( Fig. 41 ). Other characters of importance are: first flagellomere 5.0 times its width; claw with subapical additional tooth; yellow spots on: face along inner orbit, gena along outer orbit, pronotum laterally and posteriorly, disc of scutum, scutellum and metanotum, propodeum posteriorly, T1–T4 basally, all coxae, profemur ( Figs 8–14 ). Male. Unknown.

Description. FEMALE. Length: body 8.2 mm; forewing 7.5 mm. Head. Width of head 1.2 times its height ( Fig. 11 ). Ocelli small, ratio POD/OOD 0.8 times ( Fig. 14 ). Width of gena medially 0.45 times width of eye medially (lateral view) ( Fig. 9 ). Half of median interocular distance 1.3 times eye width ( Fig. 11 ). Head gently rounded above (frontal view) ( Fig. 11 ). Vertex almost straight medially and gently rounded laterally ( Fig. 14 ). Clypeus convex, its width 2.6 times its length; anterior margin with three weak processes; width of clypeus between antero-lateral corners 0.45 times its maximum width; with deep concavity along lateral margin ( Figs 11, 12 ). Anterior border of labrum with median emargination. Mandible broad, pointed apically, with one inner tooth. Malar space 0.1 times pedicel width. Relation of scape, pedicel and flagellomeres 21:8:32:25:24:21:20:19:19:18:17:20. First flagellomere 5.0 times its width and 0.9 times longer than vertex width. Flagellomeres 4–8 ventro-basally weakly convex. Apical flagellomere pointed apically.

Mesosoma. Pronotum with anterior declivity slightly concave, not differentiated from dorsum; dorsally with almost parallel sides; shoulders gently rounded; 0.3 times its width medially; posterior border angulate ( Fig. 14 ). Disc of scutellum and metanotum raised above level of mesoscutum and propodeum. Metanotum medially 0.5 times metapostnotum length medially. Propodeum evenly convex, with posterior declivity not well differentiated from dorsum ( Fig. 9 ); dorsally weakly narrowed posterad.

Legs. Relation of protarsomeres 36:14:9:7:17. Protarsomeres symmetrical. Protarsomere 1 ventrally with one distinct row of short suberect spines and two indistinct rows of shorter suberect spines from each side; protarsomere 2 and 3 ventrally with few short suberect spines; protarsomere 4 and 5 ventrally without spines. Meso- and metatarsomeres 1–2 ventrally with three rows suberect spines; meso- and metatarsomere 3 ventroapically with few spines; meso- and metatarsomeres 4 and 5 ventrally without spines. Orbicula with 6–8 radiating bristles 0.7–0.8 times longer than claw. Longest spur of mesotibia 0.8 times longer than mesotarsomere 1; longest spur of metatibia 0.7 times longer than metatarsomere 1. Tarsal claws symmetrical, gently bent apically, with small inner subapical tooth.

Wings. Forewing slightly infuscated with darker preapical spot; median vein M distinctly arched; crossvein cu- a oblique ( Fig. 41 ). Hind wing regularly slightly infuscated, venation as in Fig. 42 .

Metasoma. T1 dorsally 1.1 times its maximum width. S2 with two weak transverse furrows, not connected medially. S5 posteriorly with concavity on both sides from median line.

Sculpture. Posterior half of clypeus and frons with dense small punctures ( Fig. 11 ). Clypeus anteriorly smooth and shine, with elongated smooth furrows and pits changing to dense small punctures ( Figs 11, 12 ). Pronotum with weakly visible micropunctures. Disc of scutum and propodeum with dense and smaller then on frons punctures. Scutellum and metanotum with gentle small punctures. Metapostnotum shine with distinct transverse striae in anterior third. Propodeum matt, densely punctated ( Fig. 13 ). Mesopleuron with fine very small punctures. T1–T4 semi polished, with fine punctures ( Fig. 10 ). T5, S5 matt. S1–S4 with micropunctures and scattered pits. Legs matt.

Pubescence. Upper frons and vertex with few short white erect setae. Clypeus along transverse median line with suberect light brown setae of different lengths. Mandible with long light brown erect setae. Gena and propodeum laterally with scattered short pale setae. S2–S4 posteriorly with scattered longer pale erect setae. T5 and S5 with dense long pale suberect setae. Frons and mesosoma (except metapostnotum and propodeum) with grey micropubescence. Metapostnotum without pubescence. Propodeum with erect whitish micropubescence ( Fig. 13 ). Metasoma with irregularly grey micropubescence.

Colour ( Figs 8–14 ). Black. Scape, pedicel, F1–F5 ventrally brown. Frons along inner orbit and gena along outer orbit with yellow stripes. Clypeus antero-laterally with small yellow spots. Basal half of mandible yellowbrown with small yellow spot at base. Pronotum antero-laterally with small oval yellow spot; along posterior border with narrow yellow stripe. Disc of scutum postero-medially with small yellow spot. Discs of scutellum and metanotum yellow. Propodeum posteriorly with group of small yellow spots. Mesopleuron anteriorly with a small roundish yellow spot; postero-dorsally with group of very small yellow spots. Metapleuron posteriorly yellow. T1 subbasally with yellow spots; T2 baso-laterally with disconnected yellow spots; T3 baso-laterally with almost connected yellow stripes; T4 and T5 basally with yellow strip. Procoxa apically yellowish; meso- and metacoxa behind with small yellow spots. Profemur ventro-subapically, dorso-apically and protibia dorso-preapically with yellow strip. Legs abundantly red-brown.

MALE. Unknown.

Comparison. Female of new species is similar to that of E. minor Gussakovskij by having concavity along lateral margin of clypeus, but is easily distinguished by having propodeum with distinct dense punctures (without distinct punctures in E. minor ) ( Fig. 13 vs Fig. 16 ), shortened flagellomere (first flagellomere 5.0 times its width vs 5.2–5.9 times in E. minor ), forewing vein cu-a distinctly arched (straight in E. minor ) ( Fig. 41 vs Figs 34, 38 ), forewing vein M strongly arched (weakly arched in E. minor ) ( Fig. 41 , arrow vs Figs 34, 38 ), yellow spots on: face along inner orbit, gena along outer orbit, pronotum laterally and posteriorly, discs of scutum, scutellum and metanotum, propodeum posteriorly, T1–T4 basally, all coxae and profemur (yellow spots only on: face along inner orbit, pronotum laterally and posteriorly, T2 and T3 basally in E. minor ) ( Figs 8–14 vs Figs 3 , 16 ).

Distribution. China (Yunnan).

Etymology. The specific name originates from the Greek pseudo - and the known species minor with reference to their similarity.

Figures

FIGURES 8 – 16. Eopompilus, females. 8 – 14. E. pseudominor, sp. nov., holotype. 15. E. internalis (Russia, Primorskij Terr.). 16. E. minor (Russia, Primorskij Terr.). 8. Habitus, lateral view. 9. Head and mesosoma, lateral view. 10. Metasoma, dorsal view. 11. Head, frontal view. 12, 15. Clypeus, frontal view. 13, 16. Propodeum, dorso-lateral view. 14. Head, pronotum and scutum, dorsal view.

FIGURES 26 – 42. Eopompilus. Wings. 26 – 29. E. internalis (Russia, Primorskij Terr.). 30 – 33. E. luteus (Russia, Primorskij Terr.). 34 – 38. E. minor (Russia, Primorskij Terr.). 39 – 40. E. ungulivarius (China, Ningxia). 41, 42. E. pseudominor, sp. nov., holotype. 26, 28, 30, 32, 34, 36, 38, 39, 41. Forewing. 27, 29, 31, 33, 35, 37, 40, 42. Hind wing. 26, 27, 30, 31, 34, 35, 38, 41, 42. Females. 28, 29, 32, 33, 36, 37, 39, 40. Males. Scale bar = 1 mm (26 – 37 from: Loktionov & Lelej 2014).

FIGURES 1 – 7. Eopompilus. Habitus, lateral view. 1, 2. E. internalis (Russia, Primorskij Terr.). 3, 4. E. minor (Russia, Primorskij Terr.). 5. E. ungulivarius (China, Ningxia). 6, 7. E. luteus (Russia, Primorskij Terr.). 1, 3, 7. Females. 2, 4, 5, 6. Males. (1, 2 from: Loktionov & Lelej 2014).