Definitions for "Claspers"
modified inner portions of the pelvic fins in sharks, rays, and chimaeras; used for sperm transfer to female
appendages at the end of a male Odonata used to grasp the female's head (Anisoptera) or prothorax (Zygoptera) during mating; made up of cerci and epiproct in Anisoptera and cerci and paraprocts in Zygoptera.
Paired extensions of the pelvic fins in males, adapted for insertion into the female's cloaca during copulation. See also Tenaculum.