Nipponodipogon gusenleitnerorum Loktionov et Lelej, 2018

Loktionov, V. M. & Lelej, A. S., 2018, To the knowledge of genus Nipponodipogon Ishikawa, 1965 (Hymenoptera: Pompilidae, Pepsinae) from Laos, Far Eastern Entomologist 363, pp. 1-7 : 3-6

Nipponodipogon gusenleitnerorum Loktionov et Lelej , sp. n.

Figs 1–9

TYPE MATERIAL. Holotype – ♀, Laos: Phongsaly Prov., Phongsaly Env.,

21°41'N, 102°6'E, 1500 m, 6–17. V 2004 (Vít Kubáň) [ OLL]. Paratypes – Laos :

Phongsaly Prov., Phongsaly Env., 21°41'N, 102°6'E, 1500 m, 6–17.V 2004, 3 ♀

(Vít Kubáň) [ OLL]; Laos: Phongsaly Prov., Phongsaly Env., 21°41'N, 102°6'E ,

1500 m, 28. V –20. VI 2003, 1 ♀ (Vít Kubáň) [ IBSS] .

DIAGNOSIS. FEMALE. Outer apicoventral corner of metafemur produced triangularly. T1 with long petiole basally ( Fig. 8). Propodeum without groove anteromedially, with coarse transverse rugae media- and posterolaterally ( Figs 6, 8).

Fore wing vein r long, 0.35–0.45 times as long as Rs 3 ( Fig. 2). Mesosoma completely black ( Fig. 1). MALE. Unknown.

1 – habitus, dorso-lateral view; 2 – fore wing; 3 – hind wing. Scale bar: 1 mm.

DESCRIPTION. FEMALE. Body length 6.5–7.7 mm; fore wing length 5.9–7.0

mm. Head, mesosoma and metasoma black ( Fig. 1); mandibles brownish; antenna black, except F3–F10 muddy yellow ventrally. Legs yellowish-brown with tibiae apically and tarsi darker. Fore wing barely infuscate, with two distinct fuscous bands

( Fig. 2). Hind wing barely infuscate, with somewhat darker apical portion ( Fig. 3).

Head and mesosoma matt. Frons, vertex, and mesosoma, except propodeum, finely and densely punctate. Pronotum finely striate laterally. Mesopleuron coarser punctate than frons. Upper mesopleuron and metapleuron finely and densely striate. Disc of metanotum punctate, sometimes with oblique longitudinal or transverse fine

4 – head, frontal view; 5 – head, dorsal view; 6 – metapostnotum and propodeum, dorsal view; 7 – head, lateral view; 8 – mesoscutellum, metanotum, metapostnotum, propodeum and T1, dorsal view; 9 – metaclaws.

striae. Lateral side of metanotum with several regular oblique striae. Propodeum coarsely and densely punctate anteriorly, with fine transverse rugae posteriorly and much coarse rugae media- and posterolaterally ( Figs 6, 8); with indistinct longitudinal groove anteromedially ( Figs 6, 8). Metasoma somewhat polished ( Fig. 8). T1–T5

with very fine punctures; T6 and S6 less polished than other segments, with scattered setiferous pores located on all exposed portion; S1–S5 with somewhat larger punctures than on T1–T5. S1 with several longitudinal rugae anteriorly. Transverse groove on S2 well impressed and gently arcuate.

Body with gray pubescence mostly short, but longer on propodeum posterolaterally. Body without setae except following: upper frons with one long erect setae and a few shorter ones; clypeus with a few long suberect setae anteriorly; mandible with long and stout setae; S2–S5 with scattered short erect setae posteriorly; T6 and

S6 with denser long erect pale setae.

Head in frontal view 1.1–1.2 times as wide as height ( Fig. 4). Vertex slightly convex between eye tops ( Fig. 4). Upper frons slightly convex in profile ( Fig. 7).

Frons with median line ( Fig. 5). Supra-antennal area of frons produced anteriorly into frontal ledge overhanging antennal radicle ( Fig. 7). Inner orbits slightly con-

vergent above and subparallel below ( Fig. 4). Half of MID 1.3–1.4 times as long as eye width. Ocelli large, slightly raised; ocellar triangle acute-angled ( Fig. 5);

POD/OOD = 0.70–0.85. Posterior margin of vertex in dorsal view barely concave medially ( Fig. 5). Gena in dorsal view slightly developed ( Fig. 5). Clypeus convex medially, with distinct concavity basolaterally; anterolateral corner broadly rounded;

anterior margin barely emarginate medially; 2.7–2.9 times as wide as height. Apical margin of labrum broadly rounded. Mandible with two subapical teeth. Maxillary cardo with two tufts of thin and pale bristles. Malar space short. Gena noticeably narrowing towards vertex ( Fig. 7). Antenna short, stout, and thickened toward middle of flagellum; F1–F3 distinctly widening toward apex; apex of apical fla-

gellomere pointed; F1 0.95–1.0 times as long as F2; F1 2.6–2.8 times as long as width and 0.65–0.70 times as long as UID.

Pronotum with anterior declivity flattened and somewhat concave, not distinctly differentiated from dorsum; dorsum in dorsal view slightly narrowing anteriorly;

shoulder not swollen, but gently rounded; juncture between dorsal and lateral faces narrowly and roundly raised; posterior margin barely arcuately emarginate medially.

Mesoscutum evenly and barely convex with posterolateral rim not raised; parapsidal sulcus distinctly impressed. Discs of mesoscutellum and metanotum hardly raised above level of mesoscutum and propodeum. Metapostnotum narrow and practically linear, deeply sunken between metanotum and propodeum ( Fig. 6). Propodeum evenly convex with flattened posterior declivity not well differentiated from dorsum.

Fore wing ( Fig. 2) with r 0.35–0.45 times as long as Rs 3. SMC2 receiving crossvein 1m-cu at basal 0.4–0.5. SMC3 1.1–1.3 times as long as SMC2 on vein M,

and 0.7–0.9 on vein Rs, receiving crossvein 2m-cu at basal 0.54–0.55. Crossvein

2rs-m straight or sometimes hardly curved; crossvein 3rs-m barely curved; crossvein cu-a barely postfurcal. Hind wing ( Fig. 3). Outer apicoventral corner of metafemur produced triangularly. Claws symmetrical with large subapical inner tooth ( Fig. 9).

T1 distinctly petiolate ( Fig. 8). S6 with longitudinal median rounded carina posteriorly.

MALE. Unknown.

DISTRIBUTION. Laos.

ETYMOLOGY. It is a pleasure for us to name the new species after well-known entomologists, Josef Gusenleitner and his son Fritz Gusenleitner (Biologiezentrum des Oberösterreichischen Landesmuseums, Linz, Austria).

REMARKS. The female of new species is closely related to that of Nipponodipogon orientalis Loktionov, Lelej et Xu, 2017 in having propodeum with coarse transverse rugae posterolaterally ( Figs 6, 8), outer apicoventral corner of metafemur produced triangularly and T1 petiolate basally. But it can be easily distinguished by the following characters: mesosoma completely black ( Fig. 1) (completely yellow orange in N. orientalis ); disc of propodeum with indistinct groove anteromedially

( Figs 6, 8) (with distinct groove in N. orientalis ); F1 2.6–2.8 times as long as width

(2.2–2.4 times in N. orientalis ); fore wing vein r long, 0.35–0.45 times as long as

Rs 3 ( Fig. 2) (short, 0.15–0.27 times in N. orientalis ).