Mesenchytraeus kuril, a New Species of Enchytraeidae (Annelida : Oligochaeta) from Kamcatka, Russian Far East

Abstract

Mesenchytraeus kuril sp. n. is described from a small spring entering Lake Kuril'skoe, southern Kamcatka Peninsula. It is characterised by small body dimensions, the presence of septal glands at 3/4-5/6, by short spermathecae uniting before the connection with the oesophagus and equipped with simple, sperm-filled diverticula, and by simple sperm ducts and penial bulbs.