New record species of the Genus Microcyclops Claus,1893 (Crustacea:Copepoda:Cyclopoida) in the Holy Karbala Province / Iraq

Abstract

   The present study introduce new record species Microcyclops varicans, (Sars ,1863). The samples of the study were collected from Al-hindiyah region in Holy Karbala governorate at 12.8.2015. The external morphological characters were used to recognize and describe the species under study and compare them with the related species of the genus Microcyclops , such characters are : body is small , thin , milky white , Anal segment with spinuls along the dorsal and ventral sides of its posterior surface ; Antenna supplied by two rows of curved spinuls near its middle external surface, both exopod and endopod are 2-segment ; intercoxa of the fourth pedigerous (P4) is slightly smaller than those of the first and third pedigerous ; base of the fifth pedigerous (P5) is connected with the fifth somite and with one short spine and one seta.