Stigmatodipogon khinganicus Kochetkov et Loktionov, 2019

Kochetkov, D. N. & Loktionov, V. M., 2019, New and little known species of spider wasps (Hymenoptera: Pompilidae) from the Russian Far East, Far Eastern Entomologist 382, pp. 1-9 : 3-5

Stigmatodipogon khinganicus Kochetkov et Loktionov , sp. n.

http://zoobank.org/NomenclaturalActs/ 75DF33C5-3A47-4AC8-9B79-1A234C0AE173

Figs 3–12

TYPE MATERIAL. Holotype – ♀, Russia: Amurskaya oblast , Khinganskiy

Nature Reserve, Cluster Khinganskiy, Dyrovatka River, 49°10ʹ45ʺN, 130°32ʹ44ʺE,

mixed forest, 28–29.VIII 2016 (D. Kochetkov) [ EATB]. Paratype – 1♀ with same label [ EATB].

DIAGNOSIS. The female of the new species can be easily separated from those of all congeners by the combination of the following characters: the frons densely punctate, interspace of punctures polished ( Fig. 4 ); POD: OOD = 1.56; F1 length

3.6× its maximum width; T1 with short not parallelsided petiole ( Fig. 7 ); the metaclaw with a strong inner tooth; the body entirely black, including the head and

3

DESCRIPTION. FEMALE (measurements for holotype given in parenthesizes).

Body length 5.2(5.5) mm; fore wing length 3.9(4.1) mm. Body black ( Figs 3–10 );

mandible brown apically. Fore wing slightly infuscate with brownish basal and subapical spots, with indistinct enclosed subapical area; pterostigma brown ( Fig. 11 ).

Hind wing slightly infuscate ( Fig. 12 ).

female: 3 – habitus, dorsal view; 4 – head, frontal view; 5 – head and mesosoma, lateral view; 6 – clypeus and mandibles, frontal view; 7 – propodeum and T1, dorsal view; 8 – S1–

S3, ventral view; 9 – mesoscutellum, metanotum, metapostnotum and propodeum, dorsal view; 10 – head and pronotum, dorsal view; 11 – fore wing; 12 – hind wing. Scale bar: 0.1

4

Head and mesosoma punctate and somewhat polished. Frons ( Fig. 4 ) densely punctate, with indistinct median line in basal half; interspace of punctures polished.

Clypeus with large and coarse preapical setiferous pores ( Fig. 6 ). Pronotum punctate more delicate than frons. Disc of mesoscutum minutely punctate. Discs of mesoscutellum and metanotum rarely punctate. Propodeum irregularly punctate,

punctures coarser and larger than on frons; antero-median portion impunctate.

Mesopleuron densely punctate. Metasoma very minutely and densely punctate.

Metapostnotum polished with fine transverse striae. Body mostly without setae except following: frons along inner orbit with one long and few shorter brown setae; clypeus with two long light brown setae postero-medially; mandible with nine suberect brown setae; prementum with two tufts of long brown setae; gena with few very short setae; procoxa with scattered short erect setae; propodeum postero-laterally with few short erect setae; S1–S5 posteriorly with scattered long light brown setae; T6 and S6 with very dense, long and short erect setae. Body with sparse somewhat brownish pubescence.

Head width in frontal view 1.1(1.1)× its height. Vertex slightly convex between eyes tops ( Fig. 4 ). Frons moderately and evenly convex ( Fig. 5 ). Inner orbits weakly convergent above and subparallel below ( Fig. 4 ). Half of MID 1.50(1.55)×

eye width. Posterior margin of vertex concave (dorsal view). POD: OOD =

1.55(1.56). Clypeus as wide as LID; width 2.75(2.70)× its height; moderately convex medially; anterolateral corner rounded; anterior margin straight in frontal view; anterior rim normal shaped ( Fig. 6 ). Malar space very short and linear. Gena in lateral view well developed, evenly narrowing towards mandible and vertex ( Fig.

5). Length relation of scape, pedicel and all flagellomeres in holotype: 26: 11: 26:

21: 20: 18: 18: 17: 16: 16: 15: 19. F1 length 3.3(3.6)× its maximum width and

0.63(0.65)× UID. Apical flagellomere pointed apically. Pronotum posterior margin subangulate medially. Discs of mesoscutellum and metanotum barely convex, not raised above level of mesoscutum and propodeum ( Fig. 5 ). Metapostnotum very short and deep ( Fig. 9 ). T1 with short petiole ( Fig. 7 ). S2 with simple transverse groove ( Fig. 8 ).

Fore wing ( Fig. 11 ) with pterostigma 1.45(1.6)× as long as SMC2 on vein M;

SMC2 receiving crossvein 1m-cu at middle; SMC2 0.78(0.75)× SMC3 length on vein M, and 1.25(1.3)× on vein Rs; SMC3 receiving crossvein 2m-cu in 0.32(0.35)

basad; crossveins 2rs-m and 3rs-m curved outwardly; crossvein cu-a hardly postfurcal. Hind wing as in Fig. 12 . Pro- and mesotibia with short spines apically. Pro-,

meso- and metatarsomere 1, and metatarsomeres 2–4 with short spines ventrally.

Meso- and metatibia with few minute spines dorsally and laterally (on outer face).

Metatibia longer spur 0.42(0.40)× metatarsomere 1. Proclaw with weak inner tooth,

meso- and metaclaw with strong inner tooth.

MALE. Unknown.

DISTRIBUTION. Russia ( Amurskaya oblast ) .

ETYMOLOGY. The specific name originates from Khingan Mountain Ridge,

with reference to the area where the new species was collected.

Figures

Figs 3–12. Stigmatodipogon khinganicus Kochetkov et Loktionov, sp. n., holotype,