摘要
本文报道四川省有瓣蝇类3新种:小口瘦粉蝇Dexopoleniaparviostiasp.nov.(丽蝇科);齿腹粪蝇Scathophagaodontosternitasp.nov.(粪蝇科);橙须重毫蝇Dichaetomyiapalpiaurantiacasp.nov.(蝇科)。
This paper describes three new species of the
Calliphoridae, Scathophagidae and Muscidae of the Calyptratae from mountainous region of
western Sichuan Province, named Dexopollenia parviostia sp. nov., Scathophaga
odontosternita sp. nov. and Dichaetomyia palpiaurantiaca sp. nov. The type specimens are
kept in the Medical Entomological Specimen Building, Institute of Microbioly and Epidemiology
Academy of military Medical Sciences, Beijing, China. 1. Dexopollenia parviostia, sp. nov.
(Figs.1~5) ♂: Body length 4.6 mm. This new species similar to the Dexopollenia disemura
Fan et Deng, 1993, but differs from the latter in: The fore tibiae without long hairs on the ventral
surface; width of frons at narrowest part about 2.33 times of the diameter of front ocellus; the
posthumeral region with yellow hairs; the hypophallus long and expanded, its apical parts of
ventral processes beyond the paraphallus markedly. ♀: Unknown. Holotype ♂, Hanyuan (Mt.
Jaoding, 3550 m. 29°22′N, 102°53′E), Sichuan Prov., 9-Ⅶ-1988, collected by Feng Yan.
2. Scathophaga odontosternita, sp. nov. (Figs.6~8) ♂: Body length 7.5 mm. This new
species similar to Scathophaga amplipennis (Portschinsky, 1887), but differs from the latter
in :The antenna reddish brown on the basal part of the 3rd segment; the longest hairs on arista
about 1.7 times of the width of 3rd antennal segment; the lateral lobe of 5th sternite with 2 rows
of obtuse spines on two thirds of apical part of the inner margin; prescutal acrostichals shorter
and in 2 irregular rows. ♀: Unknown. Holotype ♂, Yingjing (Paocaowan, 2460 m. 29°58′N,
102°50′E), Sichuan Prov., 1-Ⅵ-1990, collected by Feng Yan. Bionomics: The specimen of
this new species was obtained on human faeces in the virgin forest on a foggy day, air
temperature about 21°C. 3. Dichaetomyia palpiaurantiaca, sp. nov. (Figs.9~11) ♂: Body
length 7.5 mm. The nwe species similar to the Dichaetomyia melanotela Emden, 1965 from
Srilanka, but differs from the latter in having no prescutal intraalar; height of the jowls about
twice the width of 3rd antennal segment; lower squama wholly yellowish; hind femur with a row
of shorter and thick bristles on the apical half, but the basal half with a row of slender hairs on
the anteroventral surface; eyes without markedly enlarged anterior inner facets. It similar to the
Dichaetomyia setifemur Malloch, 1928 too, but in the present new species the r vein without
yellowish cilia on posterior margin of dorsal surface, palpi yellowish white translucent. ♀:
Unknown. Holotype ♂, Yaan (Mt. Zhougong, 1700 m. 29°58′N, 102°54′E), Sichuan Prov.,
2-Ⅵ-1989, collected by Feng Yan.
关键词
双翅目
麻蝇总科
蝇总科
新种
中国
Diptera, Sarcophagoidea, Muscoidea, new
species, China