A new genus and species of fish leeches Dolichobdella rubra, gen. n., sp. n., (Clitellata, Hirudinida, Piscicolidae) from the northern Sea of Japan

摘要

A new species of fish leeches, Dolichobdella rubra gen. n., sp. n., was found in samples collected by RV Akademik MA. Lavrentyev in the northern Sea of Japan from 470-528 m during the joint Russian-German expedition SoJaBio (Sea of Japan Biodiversity Studies) in August 2010. The leech does not exceed 13 mm in length and has the following morphological characteristics: body elongated, smooth, lacking gills and pulsatile vesicles; eyes and ocelli absent; coloration reddish; female gonopore larger than male one; 6 pairs of testisacs; accessory glands, conductive tissue and copulatory area present; ovisacs short; bursa long; coelomic system reduced.