During the ongoing partial taxonomic revision of the genus Echinolaophonte on the basis of populations previously collected from various shores of the Turkish coasts, a new species of Echinolaophonte was discovered and named Echinolaophonte mordoganensis sp. nov. The new species is morphologically most closely related to E. minuta and E. veniliae. The new species can easily be distinguished from its congeners by the combination of the following features: i) the shape of the rostrum, ii) having 2 ornamented setae instead of 1 on the syncoxa of the maxilliped, and iii) pattern difference in the P1-P4 setal formula in both male and female. The phylogenetic position of the new species in the genus has also been briefly discussed.

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The main aim of this study is to conduct a taxonomic revision of Penicillicaris pectinimana living in the mediolittoral zone of Türkiye. Therefore, numerous specimens of both sexes collected from Mediterranean (25 localities), Aegean (9 localities) and the Black Sea (10 localities) coasts were morphologically reexamined in detail for the first time with the aid of light and scanning electron microscopes. Hundreds of individuals belonging to Penicillicaris pectinimana populations collected from different localities were comparatively analysed in terms of inter/intra population variability. In the light of the data obtained in this study, it was revealed that Penicillicaris pectinimana has very wide distribution in Turkish coasts and it is found in all localities (except one) examined. All possible morphological details of both sexes of Penicillicaris pectinimana were redescribed for the first time in detail since it was described in 1884.