Vrihiamoeba – after Murase et al., 2010

Genus Vrihiamoeba Murase, Kawasaki, De Jonckheere 2010

Diagnosis: Soil heterolobosean amoebae which move with eruptive pseudopods, having occasionally a flabullate or spatulate shape. Normally they have a single vesicular nucleus. No flagellate stage is observed, but cysts are formed. Type species: Vrihiamoeba italica

Vrihiamoeba italica  Murasea, Kawasaki, De Jonckheere 2010

Diagnosis: With characters of the genus. Trophozoites 12.7-35.2 µm (mean 19.3 µm) in length and the breath is 5.6-16.0 µm (mean 10.8 µm); L/B ratio 1.1-3.2 (mean 1.9). The amoebae grow at 25 °C and no growth is observed at 37 °C. There is a single centrally located nucleolus. The cysts are approximately spherical with a diameter of 4.3-7.0 µm (mean 5.8 µm). They have a smooth inner wall and an outer wall, which is rippled or sometimes raised in peaks. No pores are present in the cyst wall.

Type Locality: ricefield soil of the Istituto Sperimentale della Risicoltura, Vercelli, Italy.

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 »