Dipogon (Stigmatodipogon) (Loktionov and Lelej 2014) Shimizu, Lelej, Loktionov, Nishimoto, and Endo 2018
- Dataset
- Revision of the subgenus Stigmatodipogon Ishikawa of the genus Dipogon Fox (Hymenoptera: Pompilidae: Pepsinae)
- Rank
- SUBGENUS
- Published in
- Shimizu, Akira, Lelej, Arkady S., Loktionov, Valery M., Nishimoto, Yutaka, Endo, Tomoji (2018): Revision of the subgenus Stigmatodipogon Ishikawa of the genus Dipogon Fox (Hymenoptera: Pompilidae: Pepsinae). Zootaxa 4514 (1): 1-22, DOI: 10.11646/zootaxa.4514.1.1
Classification
- kingdom
- Animalia
- phylum
- Arthropoda
- class
- Insecta
- order
- Hymenoptera
- family
- Pompilidae
- genus
- Dipogon
biology_ecology
Biology. Unknown.
description
(Figs 1, 2)
description
Redescription. FEMALE (holotype). Length: body 4.2 mm; fore wing 3.9 mm. Body black and polished (Fig. 1 C). Following yellowish-brown: clypeus (dark-brown basilaterally) (Fig. 1 B), mandible (reddish-brown apically), palpi, scape (Figs 1 C, 1 D), pedicel and all legs (coxae laterally and dorsally and tarsomeres V distally castaneous) (Fig. 1 C). Following bright-brown: flagellum (darker above than below) (Fig. 1 C), lateral margin of pronotum, tegula (Figs 1 A, 1 E), posteromedian spots of metasomal terga II, III and of sterna I – V, and terga IV posteriorly. Wings hyaline (Figs 1 F, 1 G); fore wing fasciae indistinctly defined. Body with short, greyish- to yellowish-white pubescence. Not setose; vertex and dorsa of pro- and mesonota with a few pale setae; clypeus preapically and mandible with long yellowish-brown bristles arising from somewhat large pores; metasomal sterna with sparse brown bristles (terga V, VI and sternum VI missing). Head weakly alutaceous and strongly polished, with minute setiferous pores (Fig. 1 B). Dorsum of pronotum impunctate and alutaceous. Dorsum of mesoscutum densely punctate and strongly alutaceous. Scutellum and metanotum weakly punctate, interspaces smooth. Mesepisternum and lower metapleuron strongly alutaceous. Side of metanotum rather regularly and strongly striate. Propodeum irregularly punctate and strongly alutaceous. Head width 1.1 × length, 1.4 × pronotal dorsum width. Vertex in frontal view moderately convex (Fig. 1 B). Inner orbits convergent distinctly above, barely below. UID: MID: LID = 7.3: 10: 9.0. MID 0. 63 × head width. Frons broad, in profile evenly convex, protruding anteriorly, far exceeding level of clypeus (Fig. 1 D); frontal line sharply impressed only below. Gena width in lateral view 0.7 × eye width. Ocellar triangle acute-angled, scarcely raised. POL: OOL = 1: 1. Clypeus slightly narrower than LID (Fig. 1 B), its width 2.4 × length, convex medially; apicolateral corner rounded; apical rim slightly depressed, set off from main surface; apical margin feebly convex. Malar space short. Flagellomere I length 1.3 × flagellomere II length, 5.2 × its width, 0.76 × UID. Pronotum with anterior declivity vertical (Figs 1 C, 1 H), feebly differentiated from dorsum; shoulder slightly bulging (Figs 1 A, 1 E); posterior margin with obtuse angulation medially. Discs of scutellum and metanotum distinctly convex above level of mesoscutum (Fig. 1 H). Metapostnotum length 0.1 × metanotum length at midline. Propodeum length 1.0 × width; dorsum in profile feebly convex, merging into declivity, with median groove. Mid and hind tibiae with a few minute spines laterally. Longer spur of hind tibia 0.5 × hind tarsomere I length. Hind tarsomeres I – IV thin; tarsomere V slightly enlarged, its length 1.3 × tarsomere IV length, its width 1.2 × tarsomere IV width. Tarsal claws with small acute tooth preapically. Fore wing shown in Fig. 1 F. Pterostigma length 1.9 × SMC 2 length, its width 0.78 × SMC 2 width. SMC 2 length 0.71 × width, narrowed on vein Rs by 0.72 × its own length on vein M, receiving crossvein 1 m-cu at basal 0.44. SMC 3 length 1.3 × width, 1.1 × SMC 2 length on vein M, 1.0 × SMC 2 length on vein Rs, narrowed on vein Rs by 0.65 × its own length on vein M, receiving crossvein 2 m-cu at basal 0.43. Crossvein 2 rs-m barely curved. Crossvein 3 rs-m arcuate. Hind wing crossvein cu-a forming obtuse angle with vein A, short and slightly sinuate (Fig. 1 G). Metasomal tergum I distinctly petiolate (Fig. 1 I). Tergum II width 0.86 × head width. Redescription. MALE (paratype). Length: body 3.9 mm; fore wing 3.8 mm. Body black (Fig. 2 C). Mandible dark brown on basal half, yellowish-brown on apical half, reddish-brown apically (Fig. 2 D). Palpi and tegula light brown (Figs 2 A, 2 E). Following ferruginous: clypeus apically, antenna below, lateral margin of pronotum, posterior margins of metasomal terga, laterotergum, sternum I mostly and sternum II basally. Legs mostly dark brown; tarsi darker distally (Fig. 2 C); fore and mid tibiae yellowish-brown below; fore femur and tarsus, mid basitarsus, and hind tibia below bright-brown. Setae sparse; a pair of setae on vertex close to inner orbits and setae on clypeus, mandible, gena, postgena, propleuron, mesosternum and fore coxa comparatively long. Head width in frontal view 1.2 × length. Inner orbits convergent both above and below (Fig. 2 D). UID: MID: LID = 8.3: 10: 8.8. MID 0.61 × head width. Lower frons in profile strongly protruding anteriorly as in female (Fig. 2 E). Ocellar triangle right-angled (Fig. 2 A). POL: OOL = 1: 0.78. Clypeus barely narrower than LID (Fig. 2 D), its width 2.3 × length, spherically convex medially; apical rim not depressed, very narrow, smooth and polished; apical margin almost straight. Gena in dorsal view well developed as in female (Fig. 2 A), its width in profile 0.7 × eye width (Fig. 2 E). Flagellomere I length 1.0 × flagellomere II length, 2.7 × its width, and 0.61 × UID. Pronotum with shoulder roundly receding anteriorly (Fig. 2 A). Metapostnotum length 0.2 × metanotum length at midline, triangularly emarginate posteromedially. Propodeum as long as broad, in profile more gently convex than in female (Fig. 2 C). Wings shown in Figs 2 F and 2 G. Pterostigma length 2.4 × SMC 2 length, its width 0.85 × SMC 2 width. SMC 2 length 1.3 × width, narrowed on vein Rs by 0.82 × its own length on vein M, receiving crossvein 1 m-cu at basal 0.56; SMC 3 length 1.2 × width, 1.1 × SMC 2 length on vein M, 0.64 × SMC 2 length on vein Rs, narrowed on vein Rs by 0.49 × its own length on vein M, receiving crossvein 2 m-cu at basal 0.32. Crossvein 3 rs-m strongly sinuate. Longer spur of hind tibia 0.60 × hind tarsomere I length. Tarsal claws with minute tooth preapically. A transverse groove on sternum II close to posterior margin of tergum I. A pair of lateral hooks on sternum VI tapering and directed outward; posterior margin of sternum VI between hooks triangularly emarginate. Exposed portion of SGP (Fig. 2 H) triangularly produced on sides with dense setae subapically and apically; apical margin roundly convex. Genitalia (Fig. 2 I) with paramere barely extending beyond apex of parapenial lobe.
diagnosis
Diagnosis. FEMALE. This species differs from other species by having the gena in dorsal view rather developed, gently and roundly receding posteriorly in both sexes (Figs 1 A, 2 A); the clypeus in large part, the mandible, scape, pedicel, and legs yellowish-brown (Figs 1 B, 1 C, 1 D); and the frons impunctate with minute setiferous pores, interspaces almost smooth and strongly polished in the female (Fig. 1 B); and having metasomal tergum I barely petiolate (Fig. 2 B) and the transverse groove on metasomal sternum II almost straight in the male.
distribution
Distribution. Russia (Far East: Kunashir Island).
materials_examined
Material examined. Paratype. RUSSIA. Kuril Islands, Kunashir Island: 1 ♂, 2 km NE Tretyakovo, 10. viii. 1986 (E. Budris) [IBSS].