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The World of Protozoa, Rotifera, Nematoda and Oligochaeta

Ref ID : 2092

Frederick C. Page; Vexillifera armata n.sp. (Gymnamoebia, Paramoebidae), an Estuarine amoeba with distinctive surface structures and trichocyst-like bodies. Protistologica XV(1):111-122, 1979

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Amoebae of two marine strains of Vexillifera bear a surface layer of delicate, hexagonal, cylindrical structures approximately 60 nm in height. Cells of one strain, V. armata n. sp., contain bodies similar to the trichocysts of dinoflagellates but without any fixed position; ejection of these bodies has never been observed. The nucleus of V. armata has a central nucleolus, but that of the second strain, Vexillifera sp., has peripheral nucleoli, the first such finding in this genus. Microtubules were found in both species, and a distinctly filamentous core in the long pseudopodia of Vexillifera sp.