First record of the family Rhizotrichidae (Copepoda, Harpacticoida) from Turkey with description of a new species

Both sexes of Tryphoema gallipoliensis sp. nov. (Copepoda, Harpacticoida, Rhizotrichidae), collected from the Gulf of Saros (Turkey), are described. Specimens were collected from Kavakköy beach, Çanakkale province. The new species can be distinguished from other members of the genus by the setal arrangement of the swimming legs, by having lanceolate spinulose apical spines on the distal exopod segment of P3 and P4, and by having four spines on both the baseoendopod and the exopod of female P5. With this study, the sexually dimorphic swimming legs are reported for the first time in the genus Tryphoema as well as in the family Rhizotrichidae. Furthermore, the family Rhizotrichidae was recorded for the first time on the Turkish coasts.