-
Reboredo, Galicia, Espaa
-
Distephanus speculum (Ehrenberg, 1837) Haeckel, 1899. Silicoflagellate about 18 microns with siliceous skeleton with six major sides, from the corners of which projects spines. Bars also arise inwards and may fuse to form an apical ring. The cytoplasm extends over the skeleton, fine pseudopodia usually project from the tops of the spines. Many small plastids, single emergent flagellum. Marine.
-
Distephanus speculum octonarius (Ehrenberg, 1844) Joergensen The skeleton is composed of an octagonal basal ring with eight radial spines projecting from the outer surface of the angles. A smaller apical ring, also octagonal, is held out from one side of the skeleton by eight supporting bars. A small protuberances is present mid-way along each of the eight sides of the apical ring.
-
Distephanus speculum bioctonarius (Ehrenberg) Silicoflagellate with siliceous skeleton with eight major sides, and from the corners of which projects eight spines, bars also arise inwards and form a delicate apical ring. Marine, from the Great Barrier Reef. Diameter of skeleton without spines, about 30 microns, spines are up to 13 microns long.
