The mandibles are usually lost, the labrum is reduced to a narrow transverse sclerite, and the labium is a small flap ( though its palps retain quite large).
颚消失，
化为
条窄
，
化为小（须发达）。
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生理
篇 In an anatomical female, that involves the vulva, which includes the mons pubis over the pubic bone, and labia majora and labia minora — the elongated skin folds that surround the vestibule, which contains both the urethral and vaginal openings.
在
女性中，这涉及外
，包
耻骨上的耻骨，大唇
唇——前庭周围的细长皮肤褶皱，前庭包尿道口道口。
