Year: 2019, Number: 2, Pages: 41-47
For the first time, the external morphology of land leeches from the oak forests of the Lazovsky Reserve was studied. Earlier Japanese species Orobdella whitmani Oka, 1895 was erroneously noted in the reserve. The specimen newly found in the reserve in 2013 differs from the O. ghilarovi Nakano et Prozorova, 2019 living in coniferous-deciduous forests, by larger size, as well as the number of somites between gonopores and ecological characteristics. Morphologically, the leech from the Lazovsky Nature Reserve is close to O. tsushimensis Nakano, 2011, known from Tsushima Island and the south of Korean Peninsula. Since anatomical and molecular studies are necessary for more precise identification, specimen from the reserve was tentatively defined as O. cf. tsushimensis. Thus, land leeches in Primorye Territory are represented by two species, O. ghilarovi and O. cf. tsushimensis, which live respectively in coniferous-deciduous and oak forests.