摘要
双翅目(Diptera)芒角亚目(Aristocera)无缝组(Aschiza)的头蝇科(Pipunculidae)昆虫多为小型暗色种类,体短翅长,头球形或半球形,复眼红褐色,占据头的大部分,雄虫腹端向上左扭转弯向腹面,雌虫产卵器长而尖弯在腹下。 头蝇为同翅目叶蝉、飞虱等害虫的寄生性天敌;常见于草原和农田,低飞徘徊寻找寄主若虫产卵。我国的头蝇曾记述30多种,都是南方种类,近年我们报道了一些北方的新种,内蒙古则缺乏调查。本文初次描记内蒙3新种及1中国新记录种,模式标本均保存在北京农业大学昆虫标本室。
This paper includes the descriptions of three new species and one new record species from Nei Mongol, China The diagnostic characters of the new species are given as follows.1. Pipunculus(Eudorylas) neimongolanus, sp. nov. (Figs. 1-3)Similar to P. (E.) macropygus (Meijere) from Java, but differs from the latter in its humeri yellow rather than black and in tibiae black rather than yellow.Holotype (?), Taibus B., Xiln Gol L. Nei Mongol; 30-Ⅷ-1978.2. Pipunculus (Eudorylas) pirifomis, sp. nov. (Figs. 4-6)Allied to P. (E.) mutllatus (Loew), but it is readily distinguished by the eighth segment of abdomen without a membranous area, and with fingered process on the outer sarstylus. Holotype (?) , Jining, Nei Mongol; 9-Ⅷ-1978.3. Dorylomorpha sinensis, sp. nov. (Figs. 7-9)Related to D.quatarius(Brunetti) from India, but differs in its last section of M3+4 straight and in crossvein r-m located slightly before one fourth of discal cell.Holotype (?) , Jining, Nei Mongol, 9-Ⅷ-1978; paratype 1 (?) , Huade, Nei Mongol, 11-Ⅷ-1978.The type specimens of the new species are kept in the Insect Collections of Beijing Agricultural University, Beijing.
