中国等彩蝇属一新种双翅目丽蝇科鼻蝇亚科.pdf
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1、Vol. 28, No. 2 June, 2006 A New Species of the Genus Isomyia Walker (Diptera: Calliphoridae: Rhiniinae) from China DENG Yao-hua1, FAN Zi-de2 (1. Shanghai Entry-Exit Inspection and Quarantine Bureau, Shanghai 201202, China; 2. Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sci
2、ences, Shanghai 200032, China) Abstract: The present new species Isomyia caudidiversa being based on a unique male is described from Guangxi, China. It belongs to I. viridaurea group, which is characterized by both subcostal and r-stem veins bare below, thoracic calypter lobulate, postalar declivity
3、 usually haired in part, etc. However the new species may be distinguished from its congeners by having the male anal cerci separated from each other in apical half. Referring to this character, the new species is named. Key words: Diptera; Calliphoridae; Rhiniinae; Isomyia; China CLC number: Q969.4
4、53.2 Document code: A Article ID: 1000-7482(2006)02-0123-05 The first author had a trip to the northern part of mountainous range of Yaoshan and made a small collection of flies there. Among them a new Rhiniinae species was found. It belongs to the group of viridaurea of the genus Isomyia, and has a
5、 series of characteristics to differ from all of congeners. We therefore determined it as a new species. The type specimen is kept in Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China. There are found 115 species belonging to genus Isomyia in the world.
6、 74 species in Oriental realm, 41 species in Afrotropical realm, and 34 species are found in China. Isomyia caudidiversa, sp. nov. (Figs.13) : Body length 8.0 mm. Head: Eyes bare; frons greyish black, width of frons about as wide as 3rd antennal segment (flagellamere); parafacial plate greyish black
7、 dusted, slightly wider than 3rd antennal segment, with 89 infraorbitals, with 2 rows of setulae; lunule bare, brownish yellow; all of facia, facialiae, medians, genae and peristomata yellowish orange, genal setulae black on upper part, yellow on the rest, and gradually turning to dark grey behind g
8、eno-metacephalic sulcus; antennae yellow, 2nd antennal segment (pedicellus) with 1 long bristle and several Received date: 2005-12-20 123 124 昆 虫 分 类 学 报 第 28 卷第 2 期 black setulae; 3rd antennal segment 4.2 times long of the 2nd, arista long plumose; palpi (palpi maxillares) yellow, broadened and fla
9、ttened with setulae. Thorax: Shining cupreous green in general, prothoracic spiracle pale yellow, metathoracic one dark brown; postalar declivity haired; chaetotaxy: ac 2+4, dc 2+4, ia 1+4, ph 4, stpl 1:1, mesopleuron (anepisternum) largely with black pilosity except for anterior upper part, where c
10、overed with yellow one; scutellum with basal, lateral and apical setae 1 pair each. Wings dark brown hyaline; epaulet black, basal part of basicostal scale black and apical brownish yellow; subcostal vein bare above and below, length of costal spine 2/3 as the r-m vein. r-stem vein setulate dorsally
11、, r4+5 vein setulated on basal section above and below, m1+2 vein angularly bent forward, the opening of cell 2R5 about half length of r-m cross-vein; both of calypters with fringes yellow, the thoracic one large and lobulate, its length equal to its breadth; halteres yellow. Legs: all of femora dar
12、k green, tibiae and tarsi brownish yellow; t1 with 4 ad, 1 pd, 1 pv; t2 with 1 ad, 1 pd, 1 p; t3 with a row of 9 ad, among which 4 are more developed, and 2 pd. Abdomen: Metallic green with golden tinge; 1+2 syntergite without yellow hairs laterelly on dorsal part. 1st and 2nd sternites with yellow
13、hairs except for 1 pair of setae on the latter. Male genitalia as shown in the figures: anal cerci straight, slender and separated from each other in apical half, and their apices not sharp; surstyli more slender than cerci and gently curved forward in profile, and their apices nor hooked neither sh
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