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An order of gregarines (subclass Gregarinia), reproducing only by sporogony, in which schizogony is absent; they are parasites of annelids and arthropods.
[eu- + L. gregarius, gregarious]
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(Apicomplexa: Eugregarinida) em Mytella guyanensis (Lamarck, 1819) (Bivalvia: Mytilidae) da regiao estuarina do Rio Cachoeira, Ilheus, Bahia, Brasil.
(Apicomplexa: Eugregarinida) parasitizing the Eastern Lubber Grasshopper, Romalea microptera (Orthoptera: Romalidae), from Florida, L.S.A.
prytherchi (Eugregarinida, Porosporidae) with special reference to the hostparasite relations.