vent ; anal pore
锁肛穿孔术 proctotresia
横肛耳孔鲶 Parotocinclus doceanus
侧肛环蜡孔 [昆] lateral orbacerores
中肛环蜡孔 [昆] mesal orbacerores
肛前孔 preanal pore
肛侧孔 adanal pore
·2,447,543篇论文数据，部分数据来源于NoteExpress
口两侧各有一对钩，虫体布满似乳突状小棘，只有成虫前端和末端两侧可见散在的隆起的椭圆孔状感觉器，虫体末端腹面可见肛孔。
There was a pair of curved hamuli on both sides of the mouth, while small spines like mastoid process were covered with the shape of the body.
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