Naiadocystis phykoterion n. gen., n. sp. (Apicomplexa: Eugregarinida: Hirmocystidae), is described from the Mexican pygmy grasshopper, Paratettix mexicanus (Orthoptera: Tetrigidae), collected from sandbars along Harmon Creek, Walker County, Texas, in the western edge of the Texas Big Thicket. Naiadocystis n. gen. is distinguished by the form of the epimerite complex, a simple cordoid or toroid epimerite with an interior obconoid structure resembling a funnel that tapers to a distinct axial canal bisecting the protomerite, which is conspicuous in all stages of development, and a satellite protomerite reduced to a linearly crateriform cup or sucker that receives and enfolds posterior end of primite deutomerite. Association is precocious, caudofrontal, and biassociative. Gametocysts are spherical. Sporoducts are present but vestigial and irregular in number. Oocysts are broadly elliptoid with 4 small spherical polar knobs, 1 each at 30°, 150°, 210°, and 330°, and dehisce en masse. The species described herein are differentiated by their overall size and relative proportion of cellular structures. Naiadocystis acantholobae (Hoshide, 1952) n. comb., Naiadocystis acrydiinarum (Semans, 1939) n. comb., and Naiadocystis tetrigis (Corbel, 1968) n. comb. are recognized as members of Naiadocystis previously placed within Gregarina (Apicomplexa: Eugregarinida: Gregarinidae).
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April 2004
Research Article|
April 01 2004
NAIADOCYSTIS PHYKOTERION N. GEN., N. SP. (APICOMPLEXA: EUGREGARINIDA: HIRMOCYSTIDAE), FROM THE MEXICAN PYGMY GRASSHOPPER, PARATETTIX MEXICANUS (ORTHOPTERA: TETRIGIDAE), IN THE TEXAS BIG THICKET WITH RECOGNITION OF THREE PREVIOUSLY DESCRIBED SPECIES OF NAIADOCYSTIS
R. E. Clopton;
R. E. Clopton
Department of Natural Science, Peru State College, Peru, Nebraska 68421. rclopton@oakmail.peru.edu
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T. J. Cook;
T. J. Cook
Department of Natural Science, Peru State College, Peru, Nebraska 68421. rclopton@oakmail.peru.edu
* Department of Biological Sciences, Sam Houston State University, Huntsville, Texas 77341-2166
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J. L. Cook
J. L. Cook
Department of Natural Science, Peru State College, Peru, Nebraska 68421. rclopton@oakmail.peru.edu
* Department of Biological Sciences, Sam Houston State University, Huntsville, Texas 77341-2166
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J Parasitol (2004) 90 (2): 301–307.
Citation
R. E. Clopton, T. J. Cook, J. L. Cook; NAIADOCYSTIS PHYKOTERION N. GEN., N. SP. (APICOMPLEXA: EUGREGARINIDA: HIRMOCYSTIDAE), FROM THE MEXICAN PYGMY GRASSHOPPER, PARATETTIX MEXICANUS (ORTHOPTERA: TETRIGIDAE), IN THE TEXAS BIG THICKET WITH RECOGNITION OF THREE PREVIOUSLY DESCRIBED SPECIES OF NAIADOCYSTIS. J Parasitol 1 April 2004; 90 (2): 301–307. doi: https://doi.org/10.1645/GE-137R
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