摘要
双翅目(Diptera)蚜蝇科(Syrphidae)的迷蚜蝇亚科(Milesiinae)属种繁多,其幼虫多为腐食性,生活在树干创伤、树洞、树桩、落叶及污水粪肥中;有些为植食性,危害园艺作物和中药等。成虫多访花而似蜂类。贵州省此类昆虫研究较少,本文记述4新种和3个贵州新记录种。模式标本保存在北京农业大学昆虫标本室。
This paper deals with 7 species of M ilesiinae from Guizhou. Among them 3 species are new to science and 4 species new to Guizhou. All the specimens are kept in the Insect Collection of Beijing Agricultural U niversity. The new species are described as follows:1.Milesia maolana Yang et Cheng, sp. nov. (Pigs. 1-4)Holotype , Guizhou: Maolan, Yang Chi-kun & Liu Zhiqi.This species is similar to M. apsycta Seguy, but the abdomen has a narrow yellow cross spot at the base of the second segment, black bands and a black spot on the third, and a black band and a stripe on the fourth: while the latter has a pair of translucent triangular spots on the second segment, the third and fourth yellow-brown, without bands and spots.2.C halcosyrphus (Xylotina)maculiquadratus Yang et Cheng, sp. nov. (Figs. 12- 14)Holotype , Guizhou: Huishui, 8- VI - 1979, Chen Honggen.This species differs from C. (Xylotina) nitidus (Portschinsky) by that the second and third abdominal segments brown with yellow spots; while the latter violet with metallic shining. Their male genitalia are also different.3.Xylota vulgaris Yang et Cheng, sp. nov. (Figs. 15- 16)Holotype , Guizhou: Huishui, 8- VI -1979, Chen Honggen. Paratypes: Jilin: Mt. Changbai, 9-Ⅷ-1983, Yang Chi-kun (2 ); Yang Ding (1 ); Li Fasheng (1 ). Hubei: Mt. Wudang, 29- V - 1984, Yang Chi-kun (1 ).This species belongs to the X. aeneimaculata group. It differs from the other species of the group by the male genitalia with a strong sclerotized finger process at the anteroventral end of superior lobe in lateral view.
