Nipponodipogon indicus Loktionov, 2020

Loktionov, V. M., 2020, First record of the genus Nipponodipogon Ishikawa, 1965 (Hymenoptera: Pompilidae) from India with description of a new species, Far Eastern Entomologist 398, pp. 1-7 : 2-5

Nipponodipogon indicus Loktionov , sp. n.

http://zoobank.org/NomenclaturalActs/ 8B5C1233-F49F-4826-902E-4DFB656481D4

Figs 1–9

TYPE MATERIAL. Holotype – ♀, North-Eastern India: Arunachal Pradesh,

Etalin, 700 m, 28°36.56' N, 95°53.21' E, 15–25. V 2012, leg. O. Šauša [OLL].

DIAGNOSIS. Female. Outer apicoventral corner of the metafemur rounded.

The transverse groove on S2 nearly straight ( Fig. 9 ). T1 with a distinct parallelsided portion basally. The vertex strongly convex between eye tops ( Fig. 5 ). The mesosoma in dorsal view slender, its length 2.3 × its maximum width ( Fig. 8 ).

Male. Unknown.

dorsal view; 2 – habitus, lateral view; 3 – fore wing; 4 – hind wing. Scale bar: 1.0 mm for 1

and 2; 0.5 mm for 3 and 4.

DESCRIPTION. FEMALE. Length: body 5.6 mm; fore wing 5.1 mm. Head and mesosoma matte, metasoma subpolished. Body black ( Figs 1, 2 ). Apical half of mandible brown. Legs dark brown. Fore wing inner fascia weak, outer fascia distinct

( Fig. 3 ).

Frons densely punctate, interspace of punctures polished. Pronotum and mesoscutum very densely and regularly punctate. Mesoscutellum and disc of metanotum more sparsely punctate than mesoscutum. Metanotum densely and regularly striate laterally. Mesepisternum finely and evenly punctate. Upper metapleuron finely and densely striate, interspace of striae punctate. Lower metapleuron densely punctate.

Propodeum strongly and densely punctate, interspace of punctures less than their diameter. Metasomal terga finely punctate, interspace of punctures smooth and polished on T1 and T2, finely and weakly alutaceous on following terga.

view; 6 – head and pronotum, dorsal view; 7 – head and mesosoma, lateral view; 8 – mesosoma, dorsal view; 9 – meta coxae and S1–S3, ventral view. Scale bar 0.2 mm.

Body covered with fine, appressed, pale pubescence, that being long and dense on propodeum posterolaterally. Setae on vertex and propodeum gray to white, those on clypeus, labrum, mandible, and metasoma distally yellowish to light brown.

Maxillary cardo with few thin, light brown bristles, the apex of those not extending beyond the maxillary lacinia. Head width 1.07 × its length in frontal view. Supraantennal area of the frons produced anteriorly into a frontal ledge overhanging antennal radicle. Vertex strongly convex between eye tops ( Fig. 5 ). Upper frons gently convex; half of MID 1.65 × eye width in frontal view; frontal line indistin-

guishable above, sharply impressed below. Inner orbits convergent above and slightly convergent below. UID: MID: LID = 50: 59: 55. Ocelli large, slightly raised.

Ocellar triangle acute-angled ( Fig. 6 ). POD: OOD = 0.65. Occipital margin straight

( Fig. 6 ). Gena in dorsal view strongly receding posteriorly, in profile its width 0.55 ×

eye width medially, broadest below middle. Clypeus width 2.6 × its length; lateral angle broadly rounded; apical rim feebly depressed, impunctate but alutaceous;

apical margin straight. Apical margin of labrum straight medially. Mandibles normal.

Antenna short, stout, and thickened toward the middle of flagellum. Flagellomere 1

length 2.66 × its maximum width, and 0.48 × UID.

Mesosoma in dorsal view slender, its length 2.3 × its maximum width ( Fig. 8 ).

Pronotum with anterior declivity not distinctly differentiated from dorsum ( Fig. 7 );

lateral margin weakly and gradually convergent anteriorly; shoulder broadly rounded;

junction between dorsal and lateral faces broadly rounded, not carinate; posterior margin as whole arcuate but subangulate at middle. Mesoscutum slightly raised anteromedially; posterolateral margin reflexed; parapsidal line impressed. Discs of scutellum and metanotum evenly flattened, raised on same level like mesoscutum and propodeum. Mesopleuron barely convex, if seeing mesosoma in dorsal view

( Fig. 8 ). Propodeum strongly convex; posterior declivity rather flattened; median line finely impressed; posterior declivity with several very short erect white setae in addition to pubescence laterally.

Fore wing ( Fig. 3 ) with SMC 2 receiving crossvein 1m-cu at basal 0.53; SMC3

length 1.2 × SMC2 length on vein M, 0.6 × on vein Rs, narrowed on vein Rs by

0.39 × its length on vein M, receiving crossvein 2m-cu at basal 0.4. Crossvein 2mcu barely curved posteriorly. Crossvein 3rs-m indistinctly sinuate. Crossvein cu-a originating little posteriorly to fork of M+CuA. Hind wing ( Fig. 4 ).

T1 not petiolate but with short parallel-sided basal portion. S1 not rugulose, but punctate ( Fig. 9 ). S2 with nearly straight transverse groove ( Fig. 9 ). S6 not carinate.

Tarsal claws dentate, with small preapical tooth.

MALE. Unknown.

DISTRIBUTION. North-eastern India (Arunachal Pradesh) .

ETYMOLOGY. The new species is named after India, the country, in the north-

east part of which, the holotype was collected. Treats as an adjective in opposition.

REMARKS. The new species belongs to the Nipponodipogon iwatai species-

group, females of which have outer apicoventral corner of the metafemur rounded and T1 not petiolate basally. The new species runs to Nipponodipogon iwatai (Ishikawa, 1965) , couplet 5 of the key in Loktionov et al. (2017).

Figures

Figs 1–4. Nipponodipogon indicus Loktionov, sp. n., holotype, female. 1 – habitus,

Figs 5–9. Nipponodipogon indicus Loktionov, sp. n., holotype, female. 5 – head, frontal