Protistology 3 (4) 227–231 (2004)
Description of a new species, Zygocystis levinei sp. n. (Eugregarinida, Zygocystidae), from the earthworm Amynthas nicholsoni (Oligochaeta) from West Bengal, India
Probir K. Bandyopadhyay and Amlan K. Mitra
Parasitology Laboratory, Department of Zoology, University of Kalyani, Kalyani, West Bengal, India
Surveys of acephaline gregarines from the Nadia district of West Bengal, India revealed a new species of Zygocystis Stein, 1848 in the seminal vesicles of the earthworm Amynthas nicholsoni. The new species is characterised by a pear-shaped body at the young stage and a conical one at maturity. Syzygy is formed early with partners of different size. Oocysts are navicular.
Key words: gregarines, acephaline, earthworm, Zygocystis levinei
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