Nipponodipogon hayachinensis ( Ishikawa, 1968 )

Shimizu, Akira, Lelej, Arkady S. & Loktionov, Valery M., 2015, Revision of the Palaearctic brood parasitic genus Nipponodipogon Ishikawa, 1965 of spider wasps (Hymenoptera: Pompilidae: Pepsinae), Zootaxa 3948 (3), pp. 497-520 : 499-501

1. Nipponodipogon hayachinensis ( Ishikawa, 1968)

( Figs 1 , 9 A)

Dipogon (Nipponodipogon) hayachinensis Ishikawa, 1968: 115 , ♀ (holotype, ♀, Japan, Iwate Pref., Take, foot of Mt. Hayachine, 8.vii.1967 (R. Ishikawa) [NSMT], missing); Shimizu 1996: 508.

Nipponodipogon hayachinensis: Lelej & Loktionov 2012b: 11 .

Diagnosis. FEMALE. The female differs from those of the other species by having the combination of the following characteristics: the vertex strongly convex between the eye tops, hence the head in frontal view nearly circular in outline ( Fig. 1 A); the posterior margin of the vertex remarkably concave in dorsal view ( Fig. 1 B); the outer apicoventral corner of the hind femur rounded (as in Fig. 2 D); the ocellar triangle acute-angled; and the transverse groove on S2 arcuate. MALE. Characters unknown.

Redescription. FEMALE. Length: body 5.2–7.5 mm; fore wing 4.0– 5.9 mm. Body weakly polished. Body and legs black. Following brown to ferruginous: apical half of mandible, labrum, palpi, scape and pedicel beneath, lateral margin of pronotum, posterolateral margin of metanotum, laterotergum, lateral and posterior margins of metasomal terga and sterna, fore leg, tibial spurs (fore tibial spur yellowish brown) and each segment of legs apically.

Body finely and densely punctate, interspace of punctures not alutaceous. Upper metapleuron finely striate, interspace of striae punctate, with or without posterior impunctate rim. Body with short gray pubescence; erect setae inconspicuous. Fore wing with distinct dark fasciae; inner fascia broad along crossvein cu-a ( Fig. 9 A).

Head 1.0–1.1 × as broad as long, in frontal view nearly circular in outline ( Fig. 1 A). Vertex strongly convex. Upper frons evenly convex, frontal line impressed below. Inner orbits convergent above, subparallel below, ratio of UID:MID:LID = 7.5–8.0:10:8.0–9.5. Half of MID 1.7–2.0 × as broad as eye. Ocellar triangle acute-angled, scarcely raised. Ratio of POL:OOL = 1:0.91–1.1. Ratio of OOcD:POD = 1:1.5–1.7. Gena 0.5–0.7 × as broad as eye in profile, broadest below middle. Clypeus slightly raised medially, basilateral depression shallow; apicolateral corner rounded; apical rim slightly depressed, punctate laterally; apical margin slightly concave medially ( Fig. 1 A). Mandible normal. F1 2.3–2.9 × as long as thick, 0.45–0.55 × as long as UID.

Pronotum longer than in N. nagasei ; anterior declivity not vertical nor distinctly differentiated from dorsum; shoulder evenly rounded; lateral margins gradually convergent anteriorly; junction between dorsal and lateral faces broadly rounded, not carinate; posterior margin subangulate medially. Mesoscutum rather flattened; posterolateral margin slightly reflexed; parapsidal sulcus distinctly impressed. Discs of scutellum and metanotum slightly raised above level of mesoscutum and propodeum. Metanotum with several strong striae laterally. Propodeum gently convex in profile ( Fig. 1 C) with median longitudinal groove broad or obsolete.

Fore wing ( Fig. 9 A) with SMC2 receiving crossvein 1m-cu at basal 0.41–0.55. SMC3 1.2–1.6 × as long as SMC2 on vein M, 0.68–0.86 × as long as SMC2 on vein Rs, narrowed on vein Rs by 0.39–0.44 × its own length on vein M, receiving crossvein 2m-cu at basal 0.27–0.40. Crossvein 2rs-m curved posteriorly. Crossvein 3rs-m slightly sinuate. Crossvein cu-a originating posteriorly to fork of vein M+CuA.

Longer spur of hind tibia 0.48–0.55 × as long as hind basitarsus. Tarsal claws with tooth submedially, that being much smaller than in N. nagasei ( Fig. 1 D vs. Fig. 5 D).

T1 not petiolate. S1 reticulato-rugulose medially, irregularly and longitudinally rugulose apically. Transverse groove on S2 arcuate, scarcely angulate medially. S6 without longitudinal median carina.

MALE. Unknown.

Material examined. JAPAN. Honshu: 1 ♀, Yasumiya, Towadako-machi, Aomori Pref., 1.viii.1974 ( Y. T. & H. Suda). 1 ♀, Take, foot of Mt. Hayachine, Iwate Pref., 13.vii.1967 (R. Ishikawa) (same locality and collector as those of holotype). 1 ♀, Hinoemata, Fukushima Pref., 27.viii.1979 (T. Nambu). 1 ♀, Obashiro, Nikko, Tochigi Pref., 9.vii.1981 (K. Kubota). 1 ♀, Oku-nasu, Tochigi Pref., 26.vii.1970 (T. Nambu). 1 ♀, Ko-akadani, Shiraminemura, Ishikawa Pref., 10.vii.1991 (I. Togashi). 1 ♀, Shimohambara, Izumi-mura, Fukui Pref., 29.vii.1984 ( Y. Haneda). 1 ♀, Itadori, Imajô-chô, Fukui Pref., 31.viii.1994 (S. Inoue).

Distribution. Japan (Honshu).

Biology. Unknown.

Figures

FIGURE 1. Nipponodipogon hayachinensis, ♀, type locality. A. head, frontal view; B. head, dorsal view; C. propodeum, lateral view; D. outer claw of left hind tarsus. Scale lines: 0.5 mm.

FIGURE 2. Nipponodipogon iwatai. (A – E, holotype, ♀; F – I, ♂, Japan). A. head, frontal view; B. head, dorsal view; C. mesosoma, lateral view; D. apical portion of left hind femur, outer view; E. S 1 and S 2, ventral view; F. S 6 and subgenital plate, ventrolateral view; G, subgenital plate, lateral view; H, genitalia, ventral view; I. genitalia, dorsal view. Scale lines: 0.5 mm.

FIGURE 5. Nipponodipogon nagasei. (A – D, holotype, ♀; E – G, ♂, Japan). A. head, frontal view; B. head, dorsal view; C. mesosoma, lateral view; D. outer claw of right hind tarsus; E. S 6 and subgenital plate, ventrolateral view; F. subgenital plate, lateral view; G. genitalia (left half, ventral view; right half, dorsal view). Scale lines: 0.5 mm.

FIGURE 9. Nipponodipogon, fore and hind wings. A. N. hayachinensis, ♀, Japan; B. N. iwatai, holotype; C, D. N. kurilensis, holotype; E. N. mandibularis, holotype; F, G. N. nagasei, holotype; H, I. N. rossicus, holotype. J. H. sudai sp. nov., paratype, ♀, Japan; K. H. sudai, paratype, ♂, Japan. Scale lines: 1.0 mm.