The females are flat with elongated oval bodies and a smooth integument which may be covered with wax.
The integument of the female is ridged and pitted and possesses fewer spines than in the oral sucker, the ventral sucker, and the gynecophoric canal of the male.
Integumentary system, the organ system that protects the body from various kinds of damage, such as loss of water or abrasion from outside
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