Nipponodipogon kurilensis ( Lelej, 1986 )

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 : 504-506

3. Nipponodipogon kurilensis ( Lelej, 1986)

( Figs 3 , 9 C–D)

Dipogon (Nipponodipogon) kurilensis Lelej, 1986: 800 , 806, ♀ (holotype, ♀, Russia, Kunashir Is., Caldera of Golovnin Volcano, Goryachee Lake, 11.viii.1980 (A. Lelej) [ZISP], examined); Lelej 1995: 228, ♀; Loktionov 2011: 85. Dipogon kurilensis: Loktionov & Lelej 2010: 54 , 56.

Nipponodipogon kurilensis: Lelej & Loktionov 2012a: 414 ; 2012b: 11; Loktionov & Lelej 2012b: 316, 320, ♀; 2014: 156, ♀.

Diagnosis. FEMALE. The female is similar to that of N. sudai , but differs from the latter by having the following characteristics: the vertex between the eye tops more strongly convex ( Fig. 3 A vs. Fig. 7 A); T1 with a short petiole ( Fig. 3 D vs. Fig. 8 E); and the mesoscutum distinctly raised along the midline. MALE. Characters unknown.

Redescription. FEMALE (holotype). Length: body 4.0 mm; fore wing 3.6 mm. Head and mesosoma subpolished, metasoma polished. Body black; following brown to ferruginous: antenna dorsally (bright brown ventrally), mandible (apical half yellowish brown; apex rufous), labrum, palpi, clypeus, lateral and posterior margins of pronotum, posterolateral margin of metapostnotum, posterior and lateral margins of metasomal terga and sterna and legs (fore tibia, fore tarsomeres 1–4 and tibial spurs yellowish brown); tegula light brown. Fore wing with inner fascia weak but broad ( Fig. 9 C).

Frons, vertex and mesosoma except propodeum densely punctate; interspace of punctures on frons and mesoscutum altaceous. Mesepisternum scattered with large punctures. Upper metapleuron weakly striate, interspace of striae with small punctures, without impunctate posterior rim. Propodeal dorsum widely impunctate and polished sublaterally and medially, irregularly and strongly punctate submedially; lateral side of dorsum and declivity transversely reticulato-rugulose. Metasomal terga minutely and sparsely punctate; interspace of punctures smooth or weakly altaceous, if any.

Head in frontal view 1.2 × as wide as long. Vertex strongly convex between eye tops ( Fig. 3 A). Upper frons evenly convex; frontal line obsolete. Inner orbits weakly arcuate. Ratio of UID:MID:LID = 8.2:10:8.9. Frons broad, half of MID 2.2 × eye width. Ocelli small; ocellar triangle right-angled, scarcely raised. Ratio of POL:OOL = 1:1.2. Posterior margin of vertex moderately concave ( Fig. 3 B). Clypeus 2.8 × as wide as long, convex transversely and longitudinally with distinct elliptic depression basilaterally; anterolateral corner broadly rounded; apical rim slightly depressed and impunctate; apical margin almost straight ( Fig. 3 A). Labrum with apical margin rounded. Mandible normal-sized, with apical point and two additional teeth pointed. Malar space short. Gena in dorsal view more roundly receding posteriorly than in N. sudai ( Fig. 3 B vs. Fig. 7 C), in profile 0.6 × eye width, broadest below middle. Ratio of F1 and F2 = 1: 1.2; F1 2.2 × as long as thick, 0.43 × as long as UID.

Pronotum with anterior declivity not steep ( Fig. 3 C), short and somewhat concave; dorsum in dorsal view slightly narrowing anteriorly; shoulder gently rounded; lateral face finely striate medially; juncture between dorsal and lateral faces narrowly and roundly raised; posterior margin arcuately emarginate. Mesoscutum distinctly raised medially, its posterolateral margin barely reflexed; parapsidal sulcus finely impressed. Discs of scutellum and metanotum barely raised above level of mesoscutum and propodeum. Metanotum with about five strong striae laterally. Propodeum evenly convex with posterior declivity not differentiated from dorsum; median groove shallow and broad.

Fore wing ( Fig. 9 C) with SMC2 receiving crossvein 1m-cu at basal 0.39. SMC3 1.1 × as long as SMC2 on vein M, 0.61 × as long as SMC2 on vein Rs, narrowed on vein Rs by 0.40 × its own length on vein M, receiving crossvein 2m-cu at basal 0.62. Crossvein 2rs-m oblique but scarcely curved. Crossvein 3rs-m weakly curved. Crossvein cu-a originating a little posteriorly to fork of vein M+CuA.

Outer apicoventral corner of hind femur produced triangularly. Longer spur of hind tibia 0.61 × as long as hind basitarsus. Tarsal claws with triangular vertical tooth preapically.

T1 petiolate, petiole short ( Fig. 3 D). S1 with a few short oblique striae basally and a few longitudinal striae subbasally ( Fig. 3 E). Transverse groove on S2 gently arcuate. S6 without distinct median carina.

MALE. Unknown.

Material examined. Holotype only.

Distribution. Russia (Kuril Is.: Kunashir).

Biology. Unknown.

Figures

FIGURE 3. Nipponodipogon kurilensis, holotype, ♀. A. head, frontal view; B. head, dorsal view; C. mesosoma, lateral view; D. T 1, dorsal view; E. S 1 and S 2, ventrolateral view. Scale lines: 0.5 mm.

FIGURE 7. Nipponodipogon sudai sp. nov. (A – F, holotype, ♀; G – K, paratype, ♂, Japan). A. head, frontal view; B. head, lateral view; C, G. head, dorsal view; D. mesosoma, lateral view; E. apical portion of left hind femur, outer view; F. S 1, ventrolateral view; H. S 6, ventrolateral view; I. subgenital plate, lateral view; J. genitalia (left half, dorsal view; right half, ventral view); K. aedeagus and parapenial lobe, dorsal view. Scale lines: 0.5 mm.

FIGURE 8. Nipponodipogon, female head, anterolateral view (A, B), female T 1, dorsal view (C – E) and male subgenital plate, ventral view (F – I). A. N. mandibularis, paratype, Japan. B. N. nagasei, Japan. C. N. iwatai, Japan; D. N. nagasei, Japan; E. N. sudai sp. nov., paratype, Japan; F. N. iwatai, Japan; G. N. nagasei, Japan; H. N. rossicus, paratype, Russian Far East; I. N. sudai, paratype, Japan. Scale lines: 0.5 mm for A – E, 0.25 mm for F – I.

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.