Intromittent organ smooth, conical, sometimes with a stylet.
Source: Prudhoe, 1982.
The following taxa of this family occur in the region:
Genus Leptoplana
Genus Notoplana
Genus Stylochoplana
Leptoplana schizoporellae
Leptoplana tremellaris
Notoplana atomata
Stylochoplana maculata