Filosea: Gromiida: Gromiidae

Dujardin, 1835

Gromia Family & Genus: Test round, thick, firm, with rodlike radial structure (Illustrated Guide, 1985).
Genus: Thin test spherical to elongate ellipsoid; pseudostome terminal; many filopodia, branching and anastomosing; many species (Kudo, 1966).

Gromia, x 400, x 640, Aug. 7-13 1999, Vermont-Maine U.S.A., by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640

Gromia oviformis Dujardin, 1835: Cell body 150 - 3000 μm diam.; test round to elliptical; pseudostome 1/5 diam of test, with short collar, membranous, clear; pseudopods faintly granuluated, branching, anastomosing; multinucleated (Illustrated guide, 1985).

Gromia fluvials: Cell body 90 - 250 μm diam.; test spherical, smooth, membranous and slightly flexible, or with sparsely distributed siliceous particles; filopodia (pseudopods) anastomosing; cytoplasm yellowish; fresh water (How to know the protozoa, 1979).

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