Echinocystis erinaceoides, with typical spines – Photomicrograph Franz Köstlbacher, Austria

Genus Echinocystis Mikrjukov, 1997

Diagnosis: Centrohelea with a periplast of internal tangential plate scales and external radial scales. The radial scales have a shaft with two lateral wings extending along it, and a basal wing oriented perpendicular to the lateral ones.
Eight freshwater, rarely brackish, species.
References: Mikrjukov (1997), Siemensma (1991), Vers (1992).
Type species: Echinocystis erinaceoides (Petersen & Hansen, 1960)  Mikrjukov, 1997

Echinocystis erinaceoides, with typical spines – Photomicrograph Franz Köstlbacher, Austria
Echinocystis erinaceoidesDiepveen
Recent posts

Raphidocystis glabra

after Zlatogursky et al., 2018 Raphidocystis glabra Dürrschmidt, 1985 Diagnosis: Periplast 40-50 μm in diameter; spine-scales 4.6–15 μm; plate-scales 6-7 × 3-3.5 μm; tiny teeth

Read More »

Raphidocystidae

Raphidocystidae Zlatogursky, 2018 Diagnosis: centrohelids with monolayered plate-scales covering cell surface. Plate-scales with a hollow inflected margin. Sometimes trumpet-shaped or tubular spine-scales present, forming an

Read More »

Planhoogenraadia liboica

P. liboica – from Bonnet, 1979 Planhoogenraadia liboica Bonnet, 1979 Diagnosis: . Test relatively flat, with a dorsal convexity. Shell widest in the center. Aperture deep

Read More »

Deharvengia papuensis

Deharvengia papuensis, after Bonnet, 1979 Deharvengia papuensis  Bonnet, 1979 Diagnosis: Theca large, ovoid, very regular, colorless. Elliptical pseudostome bordered by a thick yellowish lip or

Read More »