Fridericia nanningensis, a new terrestrial enchytraeid species (Oligochaeta) from southwestern China

Fridericia nanningensis, a new species from wetland soil of Nanhu Park, Nan ning city, the capital of Guangxi Zhuang Autonomous Region in southwest Chi na, is described. It is characterized by 2-4 chaetae per bundle, poorly-dev eloped clitellar glands, slender, unbranched peptonephridia, and spermathec ae with 2 ampullar diverticula, a deep constriction in the middle of the am pulla and one large ectal gland. It is closely related to the European spec ies, F. alata Nielsen & Christensen, 1959 and the East European species, F. tubulosa Dozsa-Farkas, 1972 by the shape of peptonephridia and the undevel oped clitellar glands. It differs from F. alata by its shorter body length and fewer chaetae per bundle, its type of coelomocytes (type "c"), its deep constriction in the middle of the spermathecae ampulla and a larger ectal gland, and it differs from F. tubulosa by its pale epidermal glands, its mo re anterior origin of the dorsal vessel, a deep constriction in the middle of the spermathecae ampulla, shorter ectal duct, and only one ectal gland a t the spermathecal orifice.