Tanycarpa chors Belokobylskij

Tanycarpa chors Belokobylskij

(Fig. 7)

Tanycarpa chors Belokobylskij, 1998: 201. Holotype: female, Zoological Institute, Academy of Sciences, St. Petersburg, Russia (not examined).

Material examined. 1 ♀ China, Ningxia: Longtan, Liupanshan, 15–VIII–2001, Jianquan Yang (FAFU).

Diagnosis. Antenna with 20 flagellomeres, penultimate flagellomere of ♀ thick, 2.00× longer than wide; frons almost flat, smooth, densely covered with short pubescence; T1 strongly protruding dorsally, and posterior 1/2 rugose mesally, other 1/2 smooth; T2 with 2 diverging, deep grooves basally (Fig. 7); pterostigma wider basally, gradually and evenly narrowed to apex; tarsal claw of ♀ simple and long, more or less sharply curved apically; 1st flagellomere 1.30× longer than 2nd flagellomere, 1st and 2nd flagellomere 4.00× and 3.00× longer than wide, respectively; mandible 1.60× longer than wide, apical width wider than basal width, tooth 1 obviously upcurved, smaller than tooth 2, with shallow indentation between tooth 1 and tooth 2, tooth 2 wide and pointed, with sharp incision between tooth 2 and tooth 3; notauli deep, distinctly crenulate basally, obliterated posteriorly; mesoscutal lobes moderately convex, smooth and with dense pubescence; propodeum with distinct longitudinal ridge in basal 1/3 that diverges into two transverse ridges terminating in protruding lobelike tubercles, two longitudinal ridges extend posteriorly from tubercles, forming closed areola with dense long pubescence, other part virtually glabrous (Fig. 7); T1 1.70× longer than apical width; body dark brown; flagellum brown, scape and pedicel yellow; legs yellow; body length 2.80 mm, fore wing length 3.00 mm.

Distribution. China (Ningxia); South Korea; Russia (Primor'ye Kray, Sakhalin Oblast, Yevreyskaya Oblast).

Remarks. This species is newly recorded for China. The Chinese specimen closely matches the original description in Belokobylskij (1998) except for the mandible. In the specimen from China, the mandible is expanded dorsally (i.e., 1.60× longer than wide), with the 2nd tooth 1.20× wider than long, the 1st tooth much smaller, and a shallow indentation between tooth 1 and 2. The original description in Belokobylskij (1998) indicates the mandibles are not expanded dorsally (i.e., 1.80–2.00× longer than wide), with the 1st tooth large, rounded, and clearly separated by a deep notch from the relatively long, narrow 2nd tooth.

Tanycarpa chors is one of only five species thus far recorded from China with deep basal grooves on T2. As indicated in the key above, T. chors is a much darker species than T. concreta. Tanycarpa chors appears to be most similar to T. lineata and T. areolata; all have a small and round mesoscutal midpit and T1 1.70–2.00× longer than wide. However, T. chors is more similar to T. areolata in that propodeum has a distinct longitudinal carina in the basal 1/3 (Fig. 27). Conversely, in T. lineata, the propodeum lacks a distinct longitudinal carina in the basal 1/3 (Fig. 35).