广西猫儿山舞虻三新种（双翅目：舞虻科）

Three New Dance Flies of Maoer Mountain in Guangxi(Diptera:Empididae)

记述广西猫儿山舞虻科３新种，即簇毛黄隐肩舞虻（Ｄｒａｐｅｔｉｓ（Ｅｌａｐｈｒｏｐｅｚａ）ＰｉｌａｔａＹａｎｓｅｔＹａｎｇｓｐ．ｎｏｖ．）中褐黄隐肩舞虻（Ｄ．（Ｅ．）ｍｅｄｉｐｕｎｃｔａｔａＹａｎｇｅｔＹａｎｇｓｐ．ｎｏｖ．）、基凹堂舞虻（ＨｅｍｅｒｏｄｒｏｍｉａｒｉｍａｔａＹａｎｇｅｔＹａｎｇｓｐ．ｎｏｖ）。模式标本存北京农业大学昆虫标本室。

In this paper, Three new species of Empididaefrom Maoer mountain in Guangxi are described. Thetypes of new species are deposited in the Insect Collections of Beijing Agricultural University.1 Drapetis (Elaphropeza) pilata Yang et Yang,sp. nov.Body length 2. 1～2. 2 mm, wing length 2. 52. 7 mm.Head yellow. Head 0. 9 times longer than high,0. 9 times wider than high. Hairs and bristles on headyellow; ocellar bristles slightly shorter than flagellum.Antenna yellow; flagellum 2. 5 times as long as wide,2. 2 times as long as pedicel; arista brown, 3. 9 timesas long as flagellum. Proboscis yellow, 0. 5 times aslong as head, with yellow hairs; palpus yellow, 0. 6times as long as proboscis, with brownish hairs.Thorax yellow. Thorax 1. 1 times longer thanhigh, 1. 0 times wider than high. Hairs and bristles onthorax yellow. Legs yellow with yellow hairs andbrownish yellow bristles. Fore tibia with 2 dorsal bristles at middle, mid tibia with 1 dorsal bristle at middle,hind tibia with 2 dorsal bristles at middle. Wing hyaline, 2. 4 times as long as wide; viens yellow; relativelengths of 2nd, 3rd, 4th costal sectors 1: 1. 3: 0. 6. Halter pale yellow.Abdomen pale yellow, tergites 4 ～ 6 brown tobrownish black except for narrow median portionspaler. Hairs on abdomen yellow, but those on darkerlateral areas of tergite 6 brown and brush-like.Holotype ♀, paratype 1 ♀, Guangxi; Maoermountain (1 500 m), 1992-08-18, Yang Jikun, YangChunqing.This species is similar to D. (E.) xanthzna Yanget Yang from Yunnan, but may be separated from thelatter by having the wholly yellow thorax. In xanthina,the thorax is yellow with scutellum and median portiono f metanotum brown.2 Drapetis (Elaphropeza) )nedlpu)wtata Yang etYang, cp. nov.Head 3. 1 elm, wing length 3. 2 mm.Head brownish black except for oral margin yellow. Head 0. 9 times longer than high, 0. 9 times widerthan high. Head with dark brown to black hairs andbrownish yellow bristlesl ocellar bristles distinctlylonger than flagellum. Antenna yellow; flagellum 2. 4times as long as wide, 1. 8 times as long as pediceliarista brown, 4. 9 times as long as flagellum. Proboscisyellow, 0. 4 times as long as head, with black hairslpalpus yellow, 0. 6 times as long as proboscis, withblack hairs.Thorax yellow, but mesonotum with one smallbrownish spot above each wing base; scutellum bownish black except for apical margin yellow, metanotumbrownish black. Hypopleuron with a black spot on upper portion. Thorax 1. 0 times longer than high, 0. 9times wider than high. Legs yellow with brown hairsand bristles. Tibiae with 1 dorsal bristle at middle, butthe one on hind tibia longer; Wing hyaline, 2. 7 timesas long as wide; veins yellow; relative lengths of 2nd,3rd, 4th costal sectors 2: 1. 4: 0. 5. Halter pale yellow.Abdomen yellow, but tergites 4～5 brown. Hairson abdomen brownish.Holotype ♀, Guangxi: Maoer mountain(1 500 m), 1992-08-18, Yang Jikun, YangChungqing.This species is similar to D. (E.)jinghongensisYang et Yang from Yunnan, but differs from the latterin the following points: flagellum yellow, pleuron withonly one spot on upper portion of hypopleuron; injinghongensis, flagellum dark yellow, pleuron withpostero-lower margin of pteropleuron, hypopleuronand metapleuron brown.3 Hemerodrtomia rimata Yang et Yang, sp. nov.(Fig. 1)Body length 2. 4 mm, wing length 2. 3 mm.Head black. Head 1. 5 times longer than high, 1. 2times wider than high. Hairs and bristles on head yellow. Antenna pale yellow; flagellum 2. 1 times as longas wide, 2. 4 times as long as pedicel; arista pale yellow, 0. 5 times as long as flagellum. Proboscis yellow,0. 5 times as long as head, with black hairs; palpus yellow, 0. 3 times as long as proboscis, with black hairs.Thorax brown to brownish black. pleuron brownish yellow to brownish around fore coxa. Thorax 1. 6times longer than high, 0. 9 times wider than high.Hairs and bristles on thorax yellow. Legs pale yellowwith chiefly yellow hairs. Fore femur thick, 4. 6 timesas long as wide, 2. 0 times as wide as tibia. Wing hyaline, 3. 2 times as long as wide; veins brownish yellowto brown