Uncopulate females of Xenopsylla cheopis and Leptopsylla segnis might oviposit a few nonfertilized eggs after first blood-sucking, but these eggs cannot hatch.

• 刚羽化出来未经交配的两种雌蚤吸血后可产下少数孵不出幼虫的卵,雌蚤一经交配可促使产卵量增加,当雄蚤比例多于雌蚤时亦可促使产卵量增加。