After reviewing two species of two genera (and more than 100 specimens of the genus "A"), they turn out to be synonymous (hence the genera as well).

but:

The genus "A" is valid and has extended use with more than 10 described species.

Gender "B" is valid in terms of sig- nificant differences vs gender "B".

it is possible to extract the type species of the genus "A" and designate another species for the genus "B"