昆虫的第二对翅，附属于后胸称为后翅。在多数昆虫中，后翅比前翅的面积宽阔、柔软，飞翔时起上浮身体的作用。
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各品种上的白背飞虱的数学形态特征，除后翅面积无显著差异外，其它均有一定的差异。
There were obvious differences on math-morphological feature from images of the Whitebacked rice planthopper fed on the 4 rice varieties, besides the area of posterior wing.
鞘翅甲虫或其它相关的昆虫的一对坚韧的或几丁质的前翅，用于保护飞行中薄的、膜状的后翅。
Either of the leathery or chitinous forewings of a beetle or a related insect, serving to encase the thin, membranous hind wings used in flight.
结果表明，后翅翅脉特征在该族内具有稳定性，在属间和种间不具稳定性，后翅翅脉特征在绿天牛族属级和种级中分类意义不大。
The results show that the taxonomic importance of hind wing venation characters isn't stability in the genera level and species level in Callichromini.
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