Examples from the Web for claspers
The pelvic fins in the male bear long grooved cartilaginous rods which are accessory copulatory organs or claspers.The Vertebrate Skeleton|Sidney H. Reynolds
It has a hump on the back of the seventh segment, and two more on the ninth, and possesses four pairs of claspers.
This one also has humped segments, and the claspers of the thirteenth segment are imperfectly developed.
The caterpillars of this family usually have humps on the sixth and twelfth segments only, and have two pairs of claspers.
Its mouth and jaws have quite disappeared, and the legs and claspers are apparently gone.