In Europa exist only a few galleries specialized in male-art.
Except galerie MooiMan the following galleries can be found:

Kunstbehandlung in Munich; Au Bonheur du Jour in Paris.

You can find their websites by clicking on the links below.
Kunstbehandlung, Au Bonheur du Jour

Of course you can find some male-art in a lot of galleries and in online galleries.
But for a large choice visit these three galleries.