关键词: 木虱, 木虱跳小蜂, 新种, 林木, 中国

Abstract: The paper reports two new species of genus Psyllaephagus, Encyrtidae, collected from Shaanxi and Zhejiang, China respectively. i.e. Psyllaephagus longifuniculus Xu, sp. n. ex Thysanogyna limbata and Psyllaephagus latiscapus Xu, sp. n. ex Pachypsylla celtidisgemma, which are described in detail. The genus Psyllaephagus Ashmead is a first record from China. 1 Psyllaephagus longifuniculus Xu, sp. nov. (figs. 1～3) Host: Thysanogyna limbata. Distribution: Shaanxi(Wugong). Specimens examined: holotype ♀, Wugong(34°12′N,108°0′E),Shaanxi,1954 8 21, Dept. Plant Protection, Northwest Agric. Univ., ex. Thysanogyna limbata, 5526 1a; paratypes 4♀♀2♂♂, same data as holotype. Diagnosis: this new species is similar to Psyllaephagus femoralis Borelli 1920, but can be distinguished by the following combined characters: (1)pedicel 1.8 times as long as wide, the latter 2.0 times as long as wide; (2)all funicular segments clearly longer than wide, the latter with second fifth funicular segments slightly longer than wide, sixth funicular segment quadrate; (3)clava not clearly segmented, the latter with clava clearly segmented; (4)hind femora basal 0.6 black brown, the latter with hind femora basal 0.75 black brown; (5)gaster black and with weakly metallic green reflections, the latter with gaster metallic purple and brass reflections. 2 Psyllaephagus latiscapus Xu, sp. n. (figs. 4～7) Host:Pachypsylla celtidisgemma. Distribution: Zhejiang(Hangzhou). Specimens examined: holotype ♀, Hangzhou(30°12′N, 120°48′E), Zhenjiang, 1957-5-26, CHEN Qihu, ex. Pachypsylla celtidisgemma, 5720-9; paratypes 6♀♀2♂♂, same data as holotype. Diagnosis: this new species is similar to Psyllaephagus caillardiae Sugonjaev, 1968, but can be distinguished by the following combined characters: (1)antennal scape 2.4 times as long as wide, the latter with scape 3.8 times as long as wide; (2)clava as long as fifth sixth funicular segments combined, the latter with clava as long as fourth sixth funicular segments combined; (3)fore wing with marginal vein slightly longer than wide, the latter with marginal vein quadrate.

Key words: Psyllidae, Psyllaephagus, New species, Tree, China