Panurginus nigrichinensis, Hopfenmüller & P, 2025

Panurginus nigrichinensis nov.sp. ( Figs 1-10 View Figs 1-5 View Figs 6-10 )

T y p e m a t e r i a l: Holotype:J, China, 17- 18.06.1996, Ganguyi , 35 km NE of Yanan, N 36,8° E 110,3°, leg. J. Halada (Coll. OLML) GoogleMaps . Paratypes (76JJ, 148♀♀, Coll. OLML): 59JJ, 116♀♀ same dates as Holotype; 9JJ, 21♀♀, 29- 30.05.1996, Jingangling , 50 km W Linfen, N 36,2° E 111,7°, leg. J. Halada GoogleMaps ; 8JJ, 11♀♀, 13- 14.05.1996, Suide env., N 37,3° E 110,7° GoogleMaps .

D i a g n o s i s: Panurginus nigrichinensis nov.sp. fits well in the P. niger group with narrow gonostylus and inside bent and triangular enlarged penis valve. The males can be separated by the charactersitic genitalia and pregenital sterna, especially the margin of sternit 7 that is not bilobed like in the other species of the group but with a single broad extension that is slightly extended at the end. The females of P. nigrichinensis nov.sp. are quite similar to P. niger NYLANDER, 1848 and P. muraviovi ROMANKOVA & ASTAFUROVA, 2011 with terga quite shiny and only scattered punctures but have a very densely punctured vertex. A unique character of the females within the P. niger group is a small (sometimes indistinct) groove in the middle of the clypeus.

D e s c r i p t i o n o f m a l e:

Body length: 5.5-6.5 mm.

Shape: Head transverse ( Fig. 2 View Figs 1-5 ). F1 conical, slightly longer than wide apically, F2 and following slightly longer than wide. Labral plate widely rounded with median depression. Facial fovea very small and inconspicuous. Hind basitarsus 2.5-3 times as long as wide. Metasomal terga with marginal zones depressed and slightly rounded, becoming smaller towards sides. Marginal zones of T2 and T 3 in the middle about two third the length of discs.

Pregenital sterna & genitalia ( Figs 4-5 View Figs 1-5 ): S6 with posterior margin with a medially elevated extension. The extension almost straight at the end, with a row of hairs and a tiny spine at each corner. S7 with a similar extension like S6, but extension longer and slightly extended at the end and without spines. S8 neck with only very small lateral flaps and the triangular apical plate only slightly bent outside (similar to P. niger ). Gonostylus narrow, mostly parallel-sided (slightly smaller basally), apically rounded, after one third of length bent inward. Penis valve at the middle of its length bent inside, triangularly enlarged and at the end pointed, ventrally with long erect hairs.

Sculpture: Body generally shiny. Lower part of face shiny with punctures mostly 1-2 diameters apart, upper part of face strongly shagreened and punctures almost not visible. Scutum and scutellum with punctures 1-3 diameters apart. Metasomal terga with fine punctures on discs 1-2 diameters apart, sparser on first and last terga. Marginal zones of terga without punctures. Basal and marginal zones of terga slightly shagreened.

Coloration: Wing veins brownish. Clypeus yellow. The front leg partly yellow, especially front side of tibia and tip of femur. All basitarsi mostly yellow, whereas tarsomeres 2-5 mostly brownish.

D e s c r i p t i o n o f f e m a l e:

Body length 5.5-6.5 mm.

Shape: Head slightly transverse ( Fig. 7 View Figs 6-10 ). F1 conical, slightly longer than wide apically, F2 and F3 shorter than wide, F4 to 6 slightly shorter than wide, the other flagellomeres about as long as wide, but last one longer than wide. Labral plate widely rounded to slightly trapezoid, with median depression. Facial fovea straight, slightly enlarged to upper end, moderately depressed. Metasomal terga with marginal zones depressed (medially very little) and enlarged medially. Marginal zones of terga about the length of discs or slightly longer.

Sculpture: Body generally shiny. Lower part of face with scattered punctures, mostly 2-4 diameters apart, only lateral parts of clypeus and close to eyes 1-2 diameters apart. Clypeus in the middle with longitudinal groove ( Fig. 9 View Figs 6-10 ), which is small or indistinct in some specimens. Upper part of face partly shagreened, punctures 1 diameter or less apart, on vertex between lateral ocellus and upper end of eye partly very dense, almost without interspaces ( Fig. 10 View Figs 6-10 ). Scutum and scutellum with punctures mostly 1-2 diameters apart on discs, on posterior margin of scutum and anterior margin of scutellum punctures smaller and denser. Metasomal terga with very fine punctures on discs, mostly 2-4 diameters apart (on T2 slightly denser then on the other terga). Marginal zones without punctures. Basal and marginal zones of terga slightly shagreened, on T4 also on disc.

Coloration: Wing veins brownish, costal vein and stigma (especially on inner margin) dark brown. Antenna underneath orange or brownish brightened, only flagellomeres 1 and 2 completely dark. Tarsomeres brownish, at the end mostly brighter.

D i s t r i b u t i o n: Central China: Northeastern part of the Chinese province Shaanxi (Suide, Ganguyi) and the neighbouring part of the province Shanxi (JinGangling).

E t y m o l o g y: As the described species belongs to the P. niger group and was collected in China, the Latin words were combined to nigrichinensis.