In hemicephalous larvae, the head and its appendages are reduced and partially retracted into the thorax.
半头型无足幼虫头部部分退化,后端缩入胸部,如双

大蚊及一些寄生
膜
幼虫。

In hemicephalous larvae, the head and its appendages are reduced and partially retracted into the thorax.
半头型无足幼虫头部部分退化,后端缩入胸部,如双

大蚊及一些寄生
膜
幼虫。
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