Blacus (Blacus) exilis (Nees, 1811)

(Figs 3–4)

Bracon exilis Nees, 1811: 19 .

Blacus exilis: Haeselbarth, 1973: 157.

Blacus (Blacus) exilis: van Achterberg, 1976: 233; 1988: 64.

Material examined. 2♀♀, China, Inner mogolia, Helan Mtn, Shatangzi, 8.VIII.2010, Zeng Jie, No. 201005966; Zhengxiangbaiqi, 15.VIII.1998, Guo Yuanchao, No. 200010575 ; 2♀♀, China, Hebei, Xiaowutai Mtn, Dongling Mtn, alt. 2100m, 21.VIII.2005, Shi Min, No. 200607929; Zhang Hongying, No. 200607990 ; 1♀, China, Henan, Luanchuan, 12.VII.1996, Cai Ping, No. 974502 ; 1♀, China, Ningxia, Liupan Mtn, Jingyuan, Baimian, 21. VI .2010, light trap, Liu Jingxian, No. 200902197; 1♀, China, Yunnan, Kunming, 17. V .1981, He Junhua, No. 813303 (ZJUH) . 1♀, China, Sichuan, Emei Mtn, 18. VI .1955, Huang Keren and Jin Gentao, IOZ (E) 2450867 (IZCAS) ; 1♀, China, Yunnan, Xiaguan, alt. 2050m, 30. V .1955, B. Попов, IOZ (E) 2450866 (IZCAS) .

Biology. Reported as parasitoid of Ernobius nigrinus ( Coleoptera: Anobiidae), Magdalis armigera ( Coleoptera: Curculionidae), Pityokteines vorontzovi ( Coleoptera: Curculionidae) and Scolytidae . Solitary endoparasitoid and emerged from the larval or nymph stage. This species may also be attracted to light, and males will swarm (van Achterberg 1988, Yu et al., 2016).

Distribution. China (Inner mogolia, Hebei, Henan, Ningxia, Sichuan, Yunnan); Afghanistan; Azerbaijan; Georgia; Kazakhstan; Korea; Iran; Israel; Mongolia; Morocco; Russia; Turkey; Turkmenistan; Uzbekistan; Europe; Nearctic. New record for China.

Notes. The length of first metasomal tergite varies from 1.6 to 1.8 × its apical width. A specimen from Ningxia Province (No. 200902197) has only 16 antennomeres (Fig. 4D).