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The Brown-winged knapweed Root Moth (''Pterolonche inspersa'') is a moth of the Pterolonchidae family. It is found in Portugal, Spain, France, Italy, Sardinia, the Czech Republic, Slovakia, Hungary, Bulgaria, Greece and Crete.〔(Fauna Europaea )〕 It was released as a biological control agent for knapweed in Colorado, Montana, and Oregon and 1986, but there is no known establishment in the United States.〔(Weed-feeders - Pterolonche inspersa )〕 The wingspan is about 20 mm. Adults are light-brown without distinct markings. There is one generation per year. The larvae feed on ''Centaurea'' species, including ''Centaurea diffusa''. They tunnel into the root crown of their host plant and feed on the root tissue. As they reach the root cortex, they spin a silken tube and feed from within the tube. Mature larvae overwinter in the roots. In spring, a silken tube is made above the soil surface in which pupation takes place.〔(BugWood )〕 ==Gallery== Image:Pterolonche inspersa eggs.jpg|Eggs Image:Pterolonche inspersa larva.jpg|Larva Image:Pterolonche inspersa larva1.jpg|Larva Image:Pterolonche inspersa larva2.jpg|Larva Image:Pterolonche inspersa adult2.jpg|Adult 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Pterolonche inspersa」の詳細全文を読む スポンサード リンク
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