Pristina leidyi Smith
Recognition
One to 4 dorsal hair chaetae are present and these are
elongate on segment 3 and serrate except on segments 2 and 3.
The dorsal needles number 1 to 4 and are minutely bifid, but generally
appear simple pointed.
Dorsal chaetae begin already on the second segment only in this genus
and Pristinella jenkinae, which lacks a proboscis.
The ventral chaetae number 2 to 12.
There are no eyes. Coelomocytes are present.
One to 3 genital chaetae in segment 6 with long converging teeth.
Summary
Pristina longiseta Ehrenberg is now included here.
The length is 4 to 8 mm.
Distribution
A widespread North American species.
26 MAY 1996 D.L. Gustafson
AIM home page
dlg@rivers.oscs.montana.edu