Telostholus rinjani Loktionov & Lelej, 2019

Loktionov, Valery M. & Lelej, Arkady S., 2019, The spider wasp genus Telostholus Haupt, 1929 (Hymenoptera, Pompilidae) in Indonesia, with the description of three new species, Zootaxa 4648 (2), pp. 260-272 : 266-268

Telostholus rinjani Loktionov & Lelej , sp. nov.

( Figs 24–31 )

Material examined. Holotype, ♀, Indonesia, Lombok , mountain, forest, 1200 m, 8°27.027’ S 116°31.911’ E, 20.V.2012 (M. Mokrousov) [ EATB].

Diagnosis. Female. The female of this new species can be easily separated from those of other congeners by the following combination of characters: (1) fore wing more or less evenly brownish, with milky-white apical portion ( Fig. 30 ); (2) F1 2.8 times as long as maximum width and 0.72 as long as scape; (3) dorsum of propodeum slightly convex postero-laterally, without distinct projection ( Fig. 29 ); (4) fore wing with second submarginal cell receiving crossvein 1m-cu at basal 0.43 ( Fig. 30 ). Male. Unknown.

Description. FEMALE. Length: body 7.1 mm; forewing 6.4 mm. Head 1.1 times as wide as height; MID 0.56 times as long as head width in frontal view, half of MID 1.28 times as long as eye width ( Fig. 25 ). Ocelli large, slightly raised; ocellar triangle right-angled; POD: OOD = 1.4 ( Fig. 28 ). Head in frontal view with vertex slightly roundly convex between eye top ( Fig. 25 ). Posterior margin of vertex in dorsal view broadly concave ( Fig. 28 ). Head in lateral view with frons slightly convex ( Fig. 26 ). Temple in dorsal view scarcely developed ( Fig. 28 ). Gena in profile strongly narrowing towards vertex ( Fig. 26 ). Malar space very short ( Fig. 26 ). Clypeus slightly convex, 0.9 times as wide as LID, and 2.5 times as wide as height; anterior margin straight; anterolateral corner strongly rounded ( Fig. 25 ). Mandible stout with small subapical tooth. Labrum broad, with straight anterior margin. Maxillary palps 3–6 about same length. Flagellum filiform; scape normal shaped; ratio of scape, pedicel and flagellomeres length (on ventral side) 43: 16: 31: 33: 36: 34: 31: 28: 27: 25: 22: 23; scape as long as UID; F1 2.8 times as long as maximum width and 0.73 times as long as UID; apical flagellomere slightly pointed apically.

Mesosoma. Pronotum in dorsal view 0.42 times as long as its maximum width; anterior face short and inclined, differentiated from dorsum by two barely produced transverse subtriangular processes medially; posterior border rounded ( Fig. 28 ). Dorsum of mesoscutum slightly convex. Dorsum of mesoscutellum and metanotum convex. Metapostnotum deep, roundly emarginate posteriorly, 0.25 times as long as metanotum medially ( Fig. 29 ). Propodeum in dorsal view 0.82 times as long as wide ( Fig. 29 ); dorsum in lateral view slightly convex, with postero-lateral corner somewhat convex ( Figs 27, 29 ); dorsum evenly merging with posterior face not forming distinct edge; posterior face inclined and barely convex.

Legs. Proleg without spines, except following: protibia outer face with two spines, protibia with few differentlength spines apically, protarsomere 1 with two longitudinal rows of very short spines ventrally, protarsomeres 2 and 3 with median longitudinal row of very short spines ventrally, protarsomere 4 with long spines apically, longest one 0.28 times as long as protarsomere 5, protarsomere 5 without spines ventrally. Protarsi somewhat shortened, protarsomere 1 1.1 times as long as protarsomere 2–4 combined. Mesofemur with one very short spine dorso-apically. Metafemur with two short spines dorso-apically. Meso- and metatibia with scattered long spines. Metatibia longer spur 0.7 times as long as metatarsomere 1. Meso- and metatarsomere 1 with shorter than on tibia spines; meso- and metatarsomeres 2–4 ventrally with median longitudinal row of short spines; meso- and metatarsomere 2 except median row of spines with two spines on both sides of row. Tarsomere 5 without spines ventrally. Tarsal claws symmetrical and bifid, inner tooth broad and obliquely truncated.

Wings. Fore wing ( Fig. 30 ) brownish, with milky-white apical portion; pterostigma brown, 5.5 times as long as its own height (on inner distance) and 2.6 times as long as Rs 2; second submarginal cell 2.8 times as long as maximum height, narrowed on vein Rs by 0.58 times its own length on vein M, receiving crossvein 1m-cu at basal 0.43 and receiving crossvein 2m-cu at basal 0.93; crossvein 3rs-m arched towards wing apex; crossvein cu-a almost straight, originating beyond separation of vein M+CuA; vein M ending far from wing margin; vein Cu 1 not touching wing margin. Hind wing ( Fig. 31 ) translucent, with slightly brownish apical portion; crossvein cu-a evenly arched and anterofurcal.

Metasoma. In dorsal view conical shaped, slightly wider than mesosoma. Posterior margin of T1, T2, T4, T5 and S1–S5 slightly emarginate medially, T3 almost straight.

Sculpture. Body matt, except mandible, labrum and clypeus anteriorly polished. Body with inconspicuous microsculpture. Frons with fine basomedian short line, densely and minutely punctate. Metapostnotum matt, with fine transverse striae. Dorsum of propodeum densely and minutely punctate. Antenna and legs matt.

Colour and pubescence. Body black ( Fig. 24 ) except apical half of mandible brown, maxillary palps darkbrown, claws brown, longitudinal brush on metatibia golden-brown. Body without setae except following: upper frons with 14 pale thin and different-length setae, mandible and labrum with few pale setae, procoxa and propodeum postero-laterally with scattered short grayish setae, S1–S5 with few pale setae, T5 and S6 with scattered long setae. Head and mesosoma with sparse grayish micropubescence, most intensive on propodeum posteriorly. T2, T3 and S2, S3 baso-laterally with grayish pubescence, other metasomal terga and sterna with iridescence brownish micropubescence.

MALE. Unknown.

Distribution. Indonesia: Lombok.

Etymology. The new species is named after Mt. Rinjani, where the holotype was collected. Treat as a noun in apposition.

Figures

FIGURES 24–31. Telostholus rinjani sp. nov., ♀, holotype. 24. Habitus, lateral view. 25. Head, frontal view. 26. Pronotum and head, lateral view. 27. Head, mesosoma and T1 part., lateral view. 28. Pronotum, head and antenna, dorsal view. 29. Mesoscutellum, metanotum, metapostnotum and propodeum, dorsal view. 30. Fore wing. 31. Hind wing. Scale bar: 1.0 mm for 24; 0.5 mm for 30 and 31; 0.2 mm for 25–29.