OBJECTIVE: Biodiversity studies in search of endoparasitic acephaline gregarines revealed a new species under the genus Nematocystis Hesse, 1909. METHODS: The species has been obtained from the seminal vesicles of the earthworm, Eutyphoeus nicholsoni (Beddard). RESULTS AND CONCLUSION: Gamonts of this species are solitary and bear a perfect nematoid appearance with smoothly curved terminals, especially in mature forms. Mature gamonts measure 245.40-302.66 (270.68±18.86) μm in length and 20.45-26.58 (24.54±2.10) μm in width. Nucleus is rounded or slightly ovoidal, 20.45-24.54 (22.69±1.74) μm in diameter. Gametocysts are almost rounded, measuring 77.71-85.89 (82.82±2.69) μm in diameter. Oocysts are navicular, measuring 7.70-8.47 (8.24±0.36) μm x 4.23-4.62 (4.50 ±0.18) μm.
OBJECTIVE: Biodiversity studies in search of endoparasitic acephaline gregarines revealed a new species under the genus Nematocystis Hesse, 1909. METHODS: The species has been obtained from the seminal vesicles of the earthworm, Eutyphoeus nicholsoni (Beddard). RESULTS AND CONCLUSION: Gamonts of this species are solitary and bear a perfect nematoid appearance with smoothly curved terminals, especially in mature forms. Mature gamonts measure 245.40-302.66 (270.68±18.86) μm in length and 20.45-26.58 (24.54±2.10) μm in width. Nucleus is rounded or slightly ovoidal, 20.45-24.54 (22.69±1.74) μm in diameter. Gametocysts are almost rounded, measuring 77.71-85.89 (82.82±2.69) μm in diameter. Oocysts are navicular, measuring 7.70-8.47 (8.24±0.36) μm x 4.23-4.62 (4.50 ±0.18) μm.