Pseudobiceros is a genus of flatworms.

This particular genus engages in penis fencing.

When the "winner" touches its penis to the "skin" of the other, insemination occurs, and the "loser" has to bear the burden of motherhood.

[2][3] The following species are recognised in the genus Pseudobiceros:[4]

This flatworm- (or platyhelminth-) related article is a stub.