Pristina species (oligochaeta : naididae)‎ in tigris river within Baghdad City : Iraq

الملخص EN

A total of 72 individuals of genus Pristina were sorted from aquatic plant, Ceratophyllum demersum L., and filamentous algae collected from three sites on Tigris River at Baghdad including: Al-Sarafiya area (S1), Al- Jadiriyah area (S2), and Al- Za´afaraniya area (S3).

Four species were identified including P.

longiseta, P.

aequiseta, P.

proboscidea and P.

foreli, with percentags of 51.7 , 36.4, 1.1, and 10.5 % respectively.

The first two species found in all sites , while , P.

proboscidea found only in S1 and P.

foreli only in S2.