world of amoeboid organisms

Menu
Phisochila griseola
Physochila griseola, 86 µm long – Loosdrecht

 

Genus Physochila Jung, 1942

Diagnosis: shell pyriform, slightly compressed, surface with indentations and covered with siliceous exogenous plates; aperture more or less circular, with an recurved collar. Nucleus ovular.
Type species: Psysochila griseola (Wailes & Penard, 1911)

 

 

Physochila griseola (Wailes & Penard, 1911)

Diagnosis: shell pyriform or ovoid, slightly compressed, mainly of oval or polygonal plates; aperture circular, with an strongly outward curved collar.

Ecology: in Sphagnum swamps, mosses. I have found numerous shells in samples from a peat bog along the Bert Bos path in Loosdrecht, in the central part of the Netherlands, September 2012.

Dimensions: shell 70-85 µm long, mean 75 µm (Deflandre, 1926). My measurements 78-86 µm.

Remarks: If you look carefully at the picture above, you can see that the collar seems to curve inward.

Physochila griseola

Physochila griseola, 78 µm long
Physochila griseola
Physochila griseola – Austria, Tirol
Recent posts

Cyclopyxis arenata

Cyclopyxis arenata – after Boltovskoy and Lena, 1966 Cyclopyxis arenata (Cushman, 1930) Boltovskoy, 1956 Basionym: Pseudarcella arenata Cushman, 1930 Diagnosis: Hemispherical shell. Convex dorsal side,

Read More »

Cyclopyxis overview 2

C. impressa C. impressa C. stellata C. stellata C. crucistoma C. crucistoma C. crucigenia C. crucigenia C. grospietschi C. grospietschi C. triquestrus C. triquestrus C.

Read More »

Cyclopyxis profundistoma

Cyclopyxis profundistoma – from Kufferath, 1932 Cyclopyxis profundistoma Kufferath, 1932 Diagnosis: The yellowish grey colored test is made of coarser mineral particles, which are connected

Read More »

Cyclopyxis maynei

Cyclopyxis maynei – from Kufferath, 1932 Cyclopyxis maynei Kufferath, 1932 Diagnosis: Test cylindrical, characterized by the size of the aperture, which is 87-97 μm wide

Read More »

Cyclopyxis kahli obliqua

C. kahli var. obliqua , after Decloitre, 1978 Cyclopyxis kahli var. obliqua   Decloitre, 1978 Diagnosis:  Test with all the characteristics of the type species

Read More »