Nipponodipogon rossicus ( 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 : 510-513

6. Nipponodipogon rossicus ( Lelej, 1986)

( Figs 6 , 8 H, 9H–I)

Dipogon (Nipponodipogon) rossicus Lelej, 1986: 800 , 801, 806, ♀ ♂ (holotype, ♀, Russia, Primorskiy Terr., Lazovsky Reserve, Kievka, 10.vi.1980 (T. Romankova), reared from cane trap nests [ZISP], examined); Lelej 1995: 228, 230, ♀ ♂; Loktionov 2011: 85.

Dipogon rossicus: Loktionov & Lelej 2010: 54 , 56.

Nipponodipogon rossicus: Lelej & Loktionov 2012a: 414 ; 2012b: 11; Loktionov & Lelej 2014: 154, ♀ ♂.

Diagnosis. FEMALE. The female is similar to that of N. nagasei but may be distinguishable by having the gena in dorsal view more developed ( Fig. 6 C vs. Fig. 5 B). MALE. The male is similar to that of N. nagasei , but is distinguished from the latter by having the genitalia with short setae on anterior margin of paramere ( Fig. 6 J vs. Fig. 5 G).

Redescription. FEMALE (measurements of the holotype are given in parentheses). Length: body 4.4−6 mm; fore wing 3.8–4.8 mm. Body weakly polished, black. Following brown to ferruginous: apical half of mandible (sometimes orange to rufous), clypeus at least apically, labrum, palpi, antenna (sometimes black in large part), posterolateral margins of pronotum and metanotum, tegula, laterotergum, lateral and posterior margins of metasomal terga and sterna and legs (fore tibia, fore tarsus and tibial spurs bright to yellowish brown; each segment of legs bright brown apically).

Head and mesosoma except propodeum densely punctate; interspace of punctures on frons, vertex and mesoscutum finely alutaceous (that on frons smooth and polished in some specimens). Upper metapleuron finely striate, interspace of striae punctate, with or without impunctate polished posterior rim. Metanotum with several irregular striae laterally. Propodeal dorsum densely but irregularly punctate, with interspace of punctures strongly alutaceous; declivity finely reticulato-rugulose; posterolateral margin with several strong ridges ( Fig. 6 D). Metasomal terga minutely punctate; interspace of punctures smooth on T1 but weakly alutaceous on remainder.

Body covered with gray pubescence. Setae light brown on clypeus, labrum, mandible and metasoma apically, but whitish-gray on remainder. Propodeum with a few weak setae posterolaterally in addition to pubescence.

Head 1.1–1.2(1.2) × as broad as long. Vertex slightly to moderately convex between eye tops ( Fig. 6 A). Upper frons gently convex ( Fig. 6 B); frontal line impressed only below; both sides of lower frons flattened with oblique sharp groove immediately outside antennal socket. Inner orbits weakly arcuate. Ratio of UID:MID:LID = 7.4– 7.9:10:8.9–9.2(7.4:10:8.9). Half of MID 1.6–2.2(2.2) × eye width. Ocellar triangle acute- or right-angled, not raised. Ratio of POL:OOL = 1:0.9–1.3(1:1.0). Occipital margin weakly concave ( Fig. 6 C). Gena in profile 0.6–0.7 × as broad as eye, broadened ventrally. Clypeus 2.5–2.8 (2.8) × as broad as long, strongly convex medially; lateral margin weakly arcuate ( Fig. 6 A); apicolateral corner rounded; apical rim slightly depressed, smooth and impunctate; apical margin almost straight or slightly and arcuately emarginate. Anterior margin of labrum nearly straight medially. Mandible normal-sized with acute apex and two additional teeth. F1 2.0–2.8 (2.2) × as long as thick, 0.38–0.49(0.41) × as long as UID.

Pronotum with lateral margins gradually convergent anteriorly; shoulder evenly rounded; anterior declivity not vertical nor distinctly differentiated from dorsum; posterior margin obtusely angulate medially. Mesoscutum weakly convex; posterolateral margin strongly reflexed; parapsidal sulcus finely impressed. Discs of scutellum and metanotum not or slightly raised above level of mesoscutum and propodeum ( Fig. 6 D). Metapostnotum narrow, weakly and arcuately emarginate posteriorly and strongly depressed between metanotum and propodeum, with a few transverse striae. Propodeum spherically convex, posterior declivity almost as long as dorsum, not distinctly differentiated from the latter; median groove impressed only on dorsum, sometimes broad and/or shallow.

Fore wing ( Fig. 9 H) with inner fascia weak, almost indistinct; outer fascia not well defined. Fore wing SMC2 receiving crossvein 1m-cu at basal 0.51–0.61(0.60). SMC3 0.7–1.3(1.1) × as long as SMC2 on vein M, 0.81– 1.1(1.1) × as long as SMC2 on vein Rs, narrowed on vein Rs by 0.45–0.57(0.53) × its own length on vein M, receiving crossvein 2m-cu at basal 0.36–0.58(0.36). Crossvein 2rs-m slightly curved. Crossvein 3rs-m sinuate or slightly curved. Crossvein cu-a originating a little posteriorly to fork of vein M+CuA.

Outer apicoventral corner of hind femur rounded. Longer spur of hind tibia 0.49–0.61 × as long as hind basitarsus. Tarsal claws with small tooth submedially.

T1 not petiolate basally ( Fig. 6 E). Apical two thirds of S1 with weak longitudinal irregular rugae, their interspace rough ( Fig. 6 F). Transverse groove of S2 angulate or subangulate medially. S6 with median longitudinal carina.

MALE (paratype). Length: body 3.8 mm; fore wing 3.2 mm. Body black; following brown to ferruginous: antenna (scape and pedicel light brown dorsally; scape yellowish brown ventrally), labrum, mandible (apical half yellowish brown), palpi, clypeus, posterolateral margins of pronotum and metanotum, tegula, laterotergum, lateral and posterior margins of metasomal terga and sterna, and legs (fore tibia, tibial spurs and tarsi except last tarsomeres yellowish brown; coxae, trochanters, femora and mid and hind tibiae bright brown apically).

Punctures on body stronger than in female. Propodeal dorsum impunctate and strongly tessellate medially and sublaterally, irregularly and strongly punctate submedially; declivity irregularly punctato-rugulose.

Head in frontal view 1.2 × as wide as long. Ratio of UID:MID:LID = 8.5:10:8.5. Half of MID 1.7 × eye width. Ocellar triangle obtuse-angled. Ratio of POL:OOL = 1:0.88. Oblique furrow running from lateral ocellus to eye shallow. Clypeus 2.8 × as wide as long. Gena in dorsal view more rounded than in female ( Fig. 6 G vs. 6C), in profile 0.6 × eye width. Ratio of F1 and F2 = 1:1.1; F1 1.4 × as long as thick and 0.25 × as long as UID.

Disc of pronotum short; anterior declivity almost vertical; lateral margins strongly converging anteriorly; juncture between dorsal and lateral faces carinate. Parapsidal sulcus on mesoscutum distinct. Propodeum with declivity longer than dorsum.

Wing fasciae weak or almost obsolete. Fore wing SMC2 receiving crossvein 1m-cu at basal 0.61. Fore wing SMC3 1.2 × as long as SMC2 on vein M, 0.70 × as long as SMC on vein Rs, narrowed on vein Rs by 0.41 × its length on vein M, receiving crossvein 2m-cu at basal 0.50.

Longer spur of hind tibia 0.67 × as long as hind basitarsus. Tarsal claws with small vertical tooth preapically.

T1 neither petiolate nor parallel-sided basally. S1 reticulato-rugulose medially. Transverse groove on S2 strongly arcuate. Lateral hooks on S6 small and triangular, posterior margin between hooks high-curving ( Fig. 6 H). Subgenital plate similar to that of N. nagasei ( Fig. 6 I vs. Fig. 5 F), but lateral process smaller than in the latter ( Fig. 8 H, arrow). Genitalia similar to that of N. nagasei ( Fig. 6 J vs. Fig. 5 G), but setae on anterior margin of paramere short.

Material examined. Paratypes. RUSSIA. Primorskiy Terr.: 2 ♀ 1 ♂, Lazovsky Reserve, Sokolovka, 1982 (T. Romankova); 1 ♀, Gornotayozhnoe, 25.vii.1983 (A. Lelej). Additional material. RUSSIA. Primorskiy Terr.: 1 ♀, "Kedrovaya Pad" Reserve, 23.ix.1976 (A. Berezantzev); 1 ♀, Kamenushka, 30.vi.2001; 2 ♀, 32 km SE Ussuriisk, 11, 15.ix.1988 (A. Antropov); 1 ♀, Ussuriiskiy Reserve, 31.viii.1986 (E. Budris); 3 ♀, same place, 1, 4, 19.vii.1990 (A. Lelej); 1 ♀, 10 km W Tchernigovka, 22.vi.1997 (A. Lelej); 1 ♀, Tekhmenevo, Ussuri River, 4.viii.1986 (A. Lelej).

Distribution. Russia (Primorskiy Terr.).

Biology. Inhabits broad-leaved and coniferous forests, reared from cane trap nests. Appeared in end of July to mid of September ( Lelej 1995).

Figures

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 6. Nipponodipogon rossicus. (A – F, holotype, ♀; G – J, paratype, ♂, Russian Far East). A. head, frontal view; B. head, lateral view; C, G. head, dorsal view; D. mesosoma, lateral view; E. T 1, dorsal view; F. S 1 and S 2, ventral view; H. S 6, ventral view; I. subgenital plate, lateral view; J. genitalia (left half, dorsal view; right half, ventral 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.