John A. Hnida, Ph.D.

Assistant Professor of Microbiology

Midwestern University
Arizona College of Osteopathic Medicine
Department of Microbiology/Immunology
Agave Hall, Room #203E
19555 N. 59th Avenue
Glendale, AZ 85308

Office: (623) 572-3258


B.S. Zoology Arizona State University 1974
M.S. Zoology University of Wisconsin-Milwaukee 1985
Ph.D. Biology University of New Mexico 1998


My research focuses on the taxonomy of the coccidian parasites of vertebrates. The coccidia are a group of parasitic protozoa important to both veterinary and human medicine. To date, there are no published surveys on the coccidian parasites of the hosts with which I am currently working. 

Research Projects

Project I:

Survey of the coccidia of wild round-tailed ground squirrels

Project II:

Survey of the coccidia of wild Arizona cotton rats

Selected Publications

Hnida, J. A. (2015) A new species of Isospora Schneider, 1881 (Apicomplexa: Eimeriidae) from Morafka's desert tortoise Gopherus morafkai (Testudines: Testudinidae). Systematic Parasitology 92:219-222.  

Hnida, J. A. (2016) New Host and Distribution Records of Eimeria callospermophili. Comparative Parasitology 83:122-123.

Hnida, J. A., and A. Flocken (in press) Eimeria vilasi (Apicomplexa: Eimeriidae) from the round-tailed ground squirrel (Xerospermophilus tereticaudus). Southwestern Naturalist.

McAllister, C.T., and J. A. Hnida (2016) Eimeria chelydrae Ernst, Stewart, Sampson, and Fincher, 1969 (Apicomplexa: Eimeriidae) from the Common Snapping Turtle, Chelydra serpentina (Reptilia: Testudines: Chelydridae): First Report from Oklahoma. Proceedings of the Oklahoma Academy of Science 96:73-75.