For instance, males are extremely rare in some groups of the African butterfly Acraea encedon and of the widespread pill bug Armadillidium vulgare (also called a wood louse).
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- 例如非洲细蝶(Acraeaencedon)的某些族群中,雄性极为稀少,分布广泛的鼠妇(Armadillidiumvulgare;又叫木虱)也是。
