粉蚧寄生蜂一新记录属二新种(膜翅目:跳小蜂科)

Notes on one genus of parasitoids on mealybugs new to China with two new species (Hymenoptera: Encyrtidae)

报道了采自辽宁 (阜新 )的跳小蜂二新种 ,即长尾丽突跳小蜂 ,新种 Leptomastidea longicaudaXu,sp.n.和五斑敌若跳小蜂 ,新种 Dinocarsiella quinqueguttata Xu,sp.n.,对新种进行了详细描述 .这两个属均为林木上粉蚧的寄生蜂 .也是敌若跳小蜂属 Dinocarsiella Mercet在我国分布的首次记录 .

WT5”BZ]Two new species of Encyrtidae,collected from Fuxin,Liaoning of China,i.e. Leptomastidea longicauda Xu, sp. n. and Dinocarsiella quinqueguttata Xu, sp. n., are described in detail. One of them, Dinocarsiella Mercet is first recorded in China. A key to distinguish Leptomastidea longicauda Xu, sp. n. from Leptomastidea abnormis (Girault), another species reported from China,is given. 1. Leptomastidea longicauda Xu, sp. n. Host: unknown. Distribution: Liaoning(Fuxin). Specimen examined: holotype ♀, Fuxin(42°0′N, 121°36′E),Liaoning, 1994 7 27, LOU Juxian, C9506 6; paratype 1♂, same data as holotype. Diagnosis: this new species is similar to Leptomastidea rubra Tachikawa, 1956, but can be distinguished by the following combined characters: (1) first second funicular segments clearly black, the latter only first funicular segment clearly black; (2) gaster much longer than thorax, the latter with gaster shorter than thorax;(3) ovipositor much exserted, the latter with ovipositor not exserted. 2. Dinocarsiella quinqueguttata Xu, sp. n. Host: unknown. Distribution: Liaoning(Fuxin). Specimen examined: holotype ♀, Fuxin(42°0′N, 121°36′E), Liaoning, 1994 7 24, LOU Juxian, C9506 5. Diagnosis: This species is similar with Dinocarsiella zebrata Mercet, 1921 but can be distinguished from the latter by (1) head black, with white maculation, the latter with yellow maculation;(2) antennal scape whole black, the latter with yellow maculation;(3) fore wing with apical margin hyaline, the latter with apical margin infuscate. [WT5”HZ]