Mesopolobus aequus (Walker, 1834) New record to China (Fig. 1)

Eutelus aequus Walker, 1834b: 364 . Lectotype ♀, BMNH (Examined, B.M. TYPE HYM 5.1829).

Mesopolobus aequus (Walker): Rosen, 1958: 230–231; Graham, 1969: 655.

Synonymy: Pteromalus contractus Walker, 1835b: 188; Pteromalus purpureus Walker, 1835a: 493; Pteromalus leogoras Walker, 1839: 269; Pteromalus odites Walker, 1845: 261; Pteromalus temesa Walker, 1848: 124; Metastenus purus Walker, 1872: 118; Eutelus decipiens Thomson, 1878: 77; Mormoniella oviphaga Ahlberg, 1925: 82 .

Material examined. England. 1♀, Berkshire Selwood Park Em, 9 October 53, W. Fjepson, ex Oat crop, det. Bouček 1988. China . 1♀, Jilin, Changbai Mountain, 1 800–2 000 m, 6 August 1978, coll. Dingxi Liao ; 1♀, Liaoning, Shenyang, 18 June 1986, coll. Dawei Huang ; 1♀, Inner Mongolia, Oroqen Zizhiqi Alihe, 12 August 1981, coll. Dingxi Liao ; 3♀, Beijing, June 1976, coll. Dingxi Liao; 1♀, Hebei, Xiaowutai Mountain, 16 August 1964, coll. Tailu Chen ; 1♀, Hebei, Pingshan, 16 May 1985, coll. Huafu Mi ; 1♀, Hebei, Weichang, 8 April 1985, coll. Huafu Mi ; 1♀, Hebei, Xinglong, 1 600–1 800 m, 27 July 1985, coll. Huafu Mi ; 1♀, Shaanxi, 29 June 1976, coll. Dingxi Liao; 4♀, Ningxia, Yinchuan, 29 May 1982, coll. Dingxi Liao ; 1♀, Ningxia, Yinchuan Yongning cornfield, 23 June 1982, coll. Yizhong Xu ; 3♀ 4♂, Qinghai, Delingha Bange, 2 900 m, 16 September 2001, coll. Chaodong Zhu ; 1♀, Xinjiang, Xinyuan Narat Prairie, 24 June 1997, coll. Deying Ma ; 1♀ 11♂, Xinjiang, Hutubi Dafeng, 11 July 2001, coll. Hongying Hu ; 1♀, Xinjiang, Kashi, 17 June 1965, coll. Dingxi Liao ; 1♀, Xinjiang, Kashi, 25 June 1965, coll. Dingxi Liao ; 1♀, Xinjiang, Bachu, 1 350 m, 18 September 1958, coll. Changguang Li ; 6♀, Xinjiang, Shihezi, 11 July 1997, coll. MA Deying ; 1♂, Sichuan, Ganzi, Kangding, 2 480–2 800 m, 9 August 2001, coll. Chaodong Zhu ; 1♂, Tibet, Qushui, 11 August 1981, coll. Baohai Wang ; 1♀, Tibet, Lhasa, 3 650 m, 27 August 2001, coll. Chaodong Zhu.

Biology. The species was recorded as a predator on the eggs and larvae of other insects (Rosen, 1955, 1956), and reared from plants such as Achillea millefolium L. (Compositae) and Medicago sativa L. (Fabaceae) (Rosen, 1960).

Distribution. China (Jilin, Liaoning, Inner Mongolia, Beijing, Hebei, Shaanxi, Ningxia, Qinghai, Xinjiang, Sichuan, Tibet); Nearctic and Palearctic Regions (Noyes, 2014).