Paranais frici Hrabe

Recognition

Dorsal hair chaetae are absent. Dorsal needles begin on segment 5. There are 2 to 4 ventral chaetae on segment 2 and usually 1 or 2 on the rest. All of the anterior ventral chaetae have the upper tooth about twice as long as the lower tooth. When mature there are 2 or 3 penial chaetae on segment 5, which are thickened, but not as modified as Paranais litoralis. There are no eyes. Coelomocytes are present. The body wall non-papillate, but has transverse furrows, which may hold a thin layer of foreign matter.

Summary

The length is up to 9 mm when alive. It is most often found in coastal waters, but usually in freshwater.

Distribution

A widespread species over much of the world.

02 JUN 1996 D.L. Gustafson
AIM home page
dlg@rivers.oscs.montana.edu