晋北地区有瓣蝇类的研究及蝇科三新种记述(双翅目)

STUDIES ON CALYPTERATE FLIES FROM NORTHERN SHANXI, CHINA. II. DESCRIPTIONS OF THREE NEW SPECIES OF THE MUSCIDAE (DIPTERA)

整理近年来采自山西省北部山区蝇科标本中,发现阳蝇属(Helina R.-D.)二新种和点池蝇属(Spilogona Schnabl)一新种,一并描述。新种模式标本保存于沈阳师范学院生物系。 1.角叶阳蝇Helina angulicerca新种(图1—4) 雄体长:8.5毫米。复眼具短疏纤毛,额宽约为前单眼横径3倍,下眶鬃7—8对,分布于额下半部,无上眶鬃,侧颜约为触角宽1.7倍,触角暗黑,芒羽状。

Among the specimens collected from mouniainous region in the Yanbei District of Shanxi Province during the last few years, there bave been found three new species of Mnscidae flies. The type;; are kept in first author's laboratory.1. Helina angulh-erca sp. nov. tfigs, 1-4)This new species closely related to the Chinese species, Helina jianthdtiiiemds Ma, 1981. but the froms narrow, narrowest part about 3 times the width tit' front ocellus; parafacialia about 1.7 times the width of third aniennal segment; prealar bristle shorter than posterior notopleural bristle; fore tibia with a seta on the posterolateral and posteroventral surfaces respectively; hind femur without long bristle-like hairs; cerci subtriangle like.Holotype (?), Guangling, Shanxi, located at 39°N and 114°E, July 15, 1985, Coll. Wang Ming-fu.2. Melina quadrat isterna sp. nov. (figs. 5-8)Allied to the Chinese species Helina fica Hsue, 1985, but differs from the latter in the sterno-pleurals 1:2; fore tibia with 1-2 rows (about 4-6) of bristles on the posterior and posterolateral surfaces respectively; mid tibia with 6 posterolaterals; hind tibia with 7 anteroventrals; 5th sternite of male quadrate.Holotype (?), Youyu, Shanxi, located at 40°N and 112.5°, May 11,1982, Coll. Wang Ming-fu.3. Spilogona albiarenosa sp. nov. (figs. 9-12)Somewhat resembling Spilogona arenosa (Ringdahl, 1918), but differing in the frons narrow, epistqma not protruding, vibrissal angle behind frons at lunule; surstylus being rather broad, lateral margin of anal eerie not pnnruding, etc.Holotype (?), Hunyuan, Shanxi, lopatcd at 39°N and 114°E, July 14,1985, Coll, Wang Ming-fu.