Primeuchroeus yongdaerianus Kim, 2013

Wei, Na-sen, Rosa, Paolo & Xu, Zai-fu, 2014, Contributions to the knowledge of the Chinese Primeuchroeus Linsenmaier, 1968 (Hymenoptera, Chrysididae), with a key to species, ZooKeys 373, pp. 43-56 : 52-55

Primeuchroeus yongdaerianus Kim, 2013 new to China Figs 28-36

Primeuchroeus yongdaerianus Kim 2013: 95.

Materials.

4♀♀ (SCAU), Yunnan, Gaoligongshan National Nature Reserve (24°49'N, 98°46'E), 20-21.VII.2006, Jie Zeng, Juan-juan Ma & Bin Xiao leg., No. CP0045-0048; 8♀♀ (SCAU), Yunnan, Gaoligongshan National Nature Reserve, Mailongxia (25°50'23"N, 98°51'23"E), 17.VIII.2005, Kai Wu leg., No. CP0049-0056.

Description.

Described after a female from Yunnan. Body length 3.1 mm (Figs 28, 29). Forewing length 2.5 mm. MS =1.2 MOD. F-I 2.5 × as long as wide.

Head. Scapal basin deep and impunctate, with transverse striae and an elongate pit anteromedially (Fig. 30). F-I slightly longer than F-II (Fig. 30). TFC distinct and double (Fig. 30).

Mesosoma. Pronotum with anterior declivity polished and impunctate between two pits (Fig. 31); with an indistinct angle on each lateral margin (Fig. 31), with sublateral carina incomplete, and with lateral depression shallow (Fig. 33). Mesonotum with areolate punctures (Fig. 31). Mesopleuron without enlarged foveae along episternal sulcus (Fig. 33), without scrobal carina and projection (Fig. 33). Forewing with discoidal cell faint outwardly (Fig. 32); Rs short, 0.6 times as long as stigma, and ending obtusely (Fig. 32). Propodeal angle sharp and pointing backwards (Fig. 31).

Metasoma. T-I with sparser and considerably larger punctures than those on T-II and T-III (Fig. 34). S-II spots separated by 2.3 MOD (Fig. 35). T-III slightly bulging before pit row (Fig. 36); apex of T-III round, with broad testaceous transparent rim (Fig. 34); lateral margin of T-III nearly straight, without tooth (Fig. 36).

Colouration. Face metallic green, with yellow reflections. Mandible brown, with metallic green basally. Antenna black, with scape metallic green. Vertex, pronotum, mesonotum, and metanotum metallic bluish-green. with black colour. Tegula blackish-brown, with metallic blue hints. Leg with coxa and femur metallic green; tibia mostly brown, with slight metallic reflections; tarsus brown. Metasoma mostly black, with metallic green reflections posteriorly and laterally on each segment.

Variation. Females (n = 12). Body length 2.6-4.1 mm. Forewing length 2.4-3.1 mm. F-I subequal to F-II. Rs 0.6-0.7 times as long as stigma.

Male. No available specimens for this study.

Diagnosis.

TFC distinct and double. Forewing with Rs short, 0.6 times as long as stigma, and ending obtusely. Lateral margin of T-III nearly straight, without tooth.

Distribution.

China (Yunnan); Korea.

Biology.

Unknown. Collected in July and August.

Remarks.

According to Kim (2013), Primeuchroeus yongdaerianus belongs to the siamensis species-group. It is the first record to the Oriental region and to China. The specimens from Yunnan vary from those from Korea by tibia and tarsus brown, and with metallic blue on S-III.