How do know if a wolf spider is a boy or girl?

Answer:
Masculines (adults) have the last segment of the pedipalps bigger (compared to adult feminines of the same species, or subspecies) and flat, transformed in copulatory structures, while feminine ones doesn't.
First answer by Scimmia. Last edit by Scimmia. Contributor trust: 139 [recommend contributor recommended]. Question popularity: 3 [recommend question].