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''Parcoblatta americana'', the western wood cockroach, is a species of wood cockroach that occurs in Mexico and the western United States.〔〔 ==Description== The species has significant size and color variation, thought to be due to environmental conditions, particularly the effect of aridity.〔 The male of the species has normal, fully developed tegmina and wings, and a tuft of hairs on the back of its middle abdomen.〔 The general coloration in the male can vary from shining dark brown or blackish to a pale yellowish to slightly reddish tan.〔〔 The tegmina are translucent in all colorations, and the ocelli (simple eye spots) are a yellowish tan.〔 Females of the species have very greatly reduced tegmina, represented by lobe-like lateral pads, and no hind wings.〔 The female general coloration ranges from a shining reddish orange or brown, slightly darker on the back of the abdomen, to a shining dark brown, or shining black with blackish brown underparts.〔〔 The ocelli are tannish in all colorations.〔 Morgan Hebard's 1917 description included measurement ranges based on 14 male specimens and 7 female specimens:〔 : 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「Parcoblatta americana」の詳細全文を読む スポンサード リンク
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