Borisanova A.O. 2018. A new species of solitary Entoprocta (Loxosomatidae) from the Laptev Sea with notes on entoproct epibionts of polychaetes // Invertebrate Zoology. Vol.15. No.4: 373–382 [in English].
Faculty of Biology, Moscow State University, Moscow, 119991 Russia. E-mail: email@example.com
ABSTRACT: A new solitary entoproct species, Loxosomella apicalis sp.n., is described from the Laptev Sea from the depths of 72–90 m. L. apicalis sp.n. is a small species with a body length of 158–323 μm and with an extremely short stalk. Calyx bears 8 tentacles, buds emerge from a frontal budding area. The species is an epibiont of polychaete worms Aglaophamus malmgreni (Nephtyidae). Specimens of L. apicalis sp.n. are attached to the tips of the dorsal cirri or the tips of the gills of the parapodia. The base of the stalk of L. apicalis sp.n. grasps tightly the tip of the cirris or the gill. The list of all entoproct species associated with nephtyid polychaetes is given as well as the list of all polychaete families hosted solitary entoprocts, with indication of loxosomatid species.
KEY WORDS: Aglaophamus malmgreni, Kamptozoa, Loxosomatidae, Loxosomella, Arctic, epibiont.