【摘要】 报道采自云南勐腊的根粉蚧属1新种:三裂根粉蚧Rhizoecus tricirculus sp.nov.。新种在形态上与日本种Rh.avenoides Takagi&Kawai,1971相近,但新种腹脐3个,且缺管腺。模式标本保存在北京林业大学森林保护系昆虫标本室。更多还原

【Abstract】 A new species collected from Yunnan Province is described and illustrated.All type specimens are deposited in the Insect Collections of Department of Forestry Protection,Beijing Forestry University.Rhizoecus tricirculus sp.nov.(Fig.1)The adult female body elongate-oval,0.63-0.69mm long,0.31-0.44mm wide.Antennae 6-segmented,about 0.12mm long,terminal segment with 2 sickle-like fleshy hairs.Eyes present.Three pairs of legs developed.Two pairs of ostioles.Three circuli truncate-conical,situated within abdominal sternites Ⅱ-Ⅳ.Anal ring with outer and inner cells and 6 setae.Anal lobes protrudent,with 2 dorsal and 1 ventral setae.Trilocular pores evenly-distributed both surfaces of body.Multilocular disc pores present in abdominal sternites Ⅳ-Ⅸ.Simple tubular duct absent.Tritubular pores fairly numerous,distributed on all dorsal surface except submedian area of tergite Ⅴ-Ⅷ.Holotype ♀,Mengla County(21.29°N,101.33°E),Yunnan Province,January of 1993.Paratypes 5♀♀,Mengla County,Yunnan Province,from January of 1993 to January of 1994.All type specimens are collected with Tullgren funnel method.Remarks.This new species closes to Rh.avenoides Takagi & Kawai,1971,but can be easily distinguished by with 3 circuli and absence of simple tubular duct.Etymology.The species name "tricirculus" means three circuli.更多还原