Examples from the Web for clasper
The males in Elasmobranchii and Holocephali have the distal end of the meta-pterygium prolonged into a clasper.The Vertebrate Skeleton|Sidney H. Reynolds
Sometimes the pair of appendages has not a merely tactile jointed ramus, but is converted into a claw or clasper.
Oh, it's a specially fast kind of racing-boat, built by Clinker and Clasper.
Wright had the better of the start, but in ten strokes Clasper led by a quarter of a length.
Clasper made a desperate spurt, and got nearly abreast of his antagonist, who won by a length, in 23½ minutes.