In hemicephalous larvae, the head and its appendages are reduced and partially retracted into the thorax.
半头型无足
头部部分退化，后端缩入胸部，如双翅
的大蚊
寄生
膜翅。
In hemicephalous larvae, the head and its appendages are reduced and partially retracted into the thorax.
半头型无足头部部分退化，后端缩入胸部，如双翅的大蚊寄生膜翅。
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