Most male Hymenoptera have processes which form claspers or genital armature.
In the soft parts the caecum is very large, the penis is armed with a pair of barbed horny claspers and the scrotum is spiny.
In some male Phyllopoda they form complex " claspers " for holding the female.
(b) Tentacles capitate, simple; type of Coryne and Syncoryne; Myriothela is an aberrant form with some of the tentacles modified as " claspers " to hold the ova.
The male opening is on the ninth abdominal segment, to which belong the processes that form the claspers or genital armature.