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Alsophila pometaria : ウィキペディア英語版 | Alsophila pometaria
The Fall Cankerworm (''Alsophila pometaria'') is a moth of the Geometridae family. It is found in North America from Nova Scotia west to Alberta, south to Colorado and California. ==Description== The caterpillars grow to about 25 mm long. In color, they vary from light green to a dark brownish-green. Light green caterpillars have white lines running down the body from the head to the tip of the abdomen while the darker caterpillars have a black stripe the length of their back. Larvae have three pairs of legs on their thorax and three pairs of prolegs on their abdomen. The first pair of prolegs is much smaller than the last two pairs. The pupa is wrapped in a silk cocoon and is buried just beneath the surface of the ground.〔http://ento.psu.edu/extension/factsheets/fall-cankerworm Retrieved on 5 Feb 2015〕 Adult males have a 25-35 mm wingspan. The forewings are glossy brown and crossed with irregular white bands. The females are brownish-gray, wingless, and 10-12 mm long. Eggs are grayish brown with a dot and ring on the top and are less than 1 mm in diameter.〔
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