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Gregarina, a protozoan, various species which live in the alimentary canal of crayfishes, centipeds, and certain insects. is is a parasite living at the expense of the host in whose whose body it lives in. This is a Gregarinid (Actinocephalus oligacanthus) from the intestine of an insect.

Protozoan

Gregarina, a protozoan, various species which live in the alimentary canal of crayfishes, centipeds,…