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《Acta Zootaxonomica Sinica》 1989-01
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NOTES ON T ENUISETA SPECIES-GROUP OF PHAONIA R.-D. FROM CHINA (DIPTERA: MUSCIDAE)

MA ZHONG-YU(Sanitation & Anti-Epidemic Siation of Liaoning Province)WU JlNG-WEI(Sanitation & Anti-Epidemic Staticn of Gansu Province)  
The present paper deals with the Chinese species of the Phaonia tenuiseta species-group. Altogether 9 species are recorded, of which 6 are described a; new. The type specimens arc kept in the Sanitation Anti-Epidemic Station of Liaoning Province.1. Phaonia aureolicauda sp. nov. (figs 1-2)♂: Body length 8.0 mm. Eyes sparsely covered with long hairs; frons widely open, more than half the eye width; on setae extending to the anterior ocellus, without on seta; Antennae black, 3rd segment twice as long as broad, arista pubescent; gena about one-third the eye height. Acr 0 + 1, dc 2 + 3; pra developed, equal to length of 1st ntpl; prosternum hairy; notopleuron and hypopleuron bare. Legs black, the knees, the end of tibiae and the fore tarsi reddish brown; fore tibia without a p seta; mid femur without long setae on the ventral surface, mid tibia with 2-3 p and 2 pv setae; hind femur without pv setae, hind tibia with 2 av, 2 ad and 1 pd setae: palpi black, dilated at apex, somewhat spoon-shaped; 5th tergite densely with golden pollen; 1st sternite bare.♀: body length 10.0 mm. with grayish black pollen. Frons longer than the width of one eye; genae higher than one-half the eye height; 2 or; present; fore tibia with 2 p setae; midtibia with 2 ad, 5 p and 2 pv setae; 5th tergite wholly densely golden pollen.Holotype ♂, Gansu Shandan County (38°04'N, 101°04'E), 7. Ⅷ. 1983, collected by Wu Jing-wei. Allotype ♀, same as holotype.Present new species is closely related to the Phaonia tenuiseta (Pokorny, 1893), but it differs from the latter by the mid tibia with pv setae, hind femur without pv setae and 5th tergite densely covered with golden pollen in both sexes.2. Phaonia decussatoides sp. nov. (figs. 3-4)♂: Body length 10.0 mm. Eyes covered with pale long hairs; frons about twice as wide as distance between posterior ocelli inclusive, with an on seta; antennae black, 3rd segment about 1,5 times as long as wide; palpi black. Acr 0 + 1, dc 3 + 4; pra long; prosternum hairy; noto-pleuron and hypopleuron bare. Legs black; fore tibia without p seta, mid tibia with a row of pv setae at basal half rather long and strong; mid tibia without ad and pv setae, with 4 p setae; hind femur complete with a row of long av and at basal half with a row of long pv setae, hind tibia with 4 av, 2 ad and 1 pd setae, 1st sternite bare. ♀: Unknown. Holotype ♂, Qinghai Yushu County (32°15'N, 96°20'E), 3. Ⅵ. 1981, collected by Sun Bao-ye.This new species is closely similar to the Phaonia subdecussata Hennig, 1963, but differs from the latter by the mid femur at basal half with a row of long pv setae and by the antennae shorter.3. Phaonia mimofausta sp. nov. (figs 5-6)♂: Body length 6.5-8.0 mm. Eyes densely covered with long hairs; frons about 1.5 times as wide as distance between posterior ocelli inclusive, without ors seta; antennae black, arista plumose. Acr (2-3) + 3, de 2 + 4, pra long; prosternum hairy; notopleuron bare, hypopleuron with several setulae on anterior part of metathoracic spiracle; costal spine indistinct; knob of halteres yellow. Legs black, knees and tibiae brownish red; fore tibia without a p seta; mid femur with a complete row of pv setae, mid tibia with 3-4 p setae, without pv and ad setae; hind femur completely with a row of av and a row of pv setae, hind tibia with 3-4 av, 1 ad and 1 pd setae. 1st sternite hairy.♀: Unknown.Holotype ♂, Liaoning Anshan City (Mt. Qianshan, 41°N, 123°10'E). 23. Ⅴ. 1980, collected by Wang Tai-lai.Present species is closely similar to the North American species Pheonnia fausta Huckett, 1965 but it differs from the latter by the notopleuron bare, femora black, knob of halteres yellow, arista plumose, mid femur with a complete row of pv setae, mid tibia with 2-4 p p setae.4. Phaonia mimotenuiseta sp. nov.(figs. 7-8)♂: Body length 7.0-7.5mm. Eyes covered with pale medium hairs; frons about 3 times as wide as 3rd antennal segment, with 2 ors setae; antennae black, 3rd segment about twice as long as broad, arista pubescent; palpi black. Acr 0 + 1, de 2 + 3, pra long, about equal to length
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