underwing
underwingnoun- the hindwing of an insect, especially when it is normally hidden by a forewing
后翅
- the underside of a bird's wing
鸟翼下部
- (亦作 underwing moth)[usu. with modifier]a moth with drab forewings and brightly coloured hindwings, typically yellow with a black terminal band
夜蛾
- Several genera in the family Noctuidae
夜蛾科中数属
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