Microworld

world of amoeboid organisms

Menu
Trachyrhizium urniformis
Trachyrhizium urniformis, from Shiratori and Ishida, 2016

Genus Trachyrhizium  Shiratori and Ishida, 2016

Diagnosis: Marine filose amoebae with thin smooth organic thecae. Filopodia thin, branching, and occasionally anastomosing, including small granules with bidirectional movement. Thecae consisting of two layers. Extrusomes present. Mitochondria with tubular cristae. Presence of Golgi apparatuses and microbodies.

Trachyrhizium urniformis  Shiratori and Ishida, 2016

Diagnosis: Cells spherical, theca spherical with one wide circular aperture. Theca bilayered with an electron dense outer layer, and a slightly ambiguous and less dense inner layer. Extrusomes 0.4–0.5 µm in length and 0.15–0.2 µm in width, consisting of a spherical cap structure and electron dense cylinder that includes a less dense core.

Dimensions: Cells 7.5–17.6 µm in diameter.

Ecology: Marine sediments collected from northwest side of Agenashiku Island, Okinawa, Japan. Feeding on diatoms.

Recent posts

Nebela golemanskyi

N. golemanskyi, after Todorov, 2010 Nebela golemanskyi Todorov, 2010 Diagnosis: Shell large, colourless and pyriform, with a distinct short neck about one fourth of the

Read More »

Nebela nebeloides

N. nebeloides, after Gauthier-Lièvre and Thomas, 1958 Nebela nebeloides (Gauthier-Lièvre and Thomas, 1958) Todorov et al., 2010 Basionym: Difflugia nebeloides Gauthier-Lièvre and Thomas, 1958 Diagnosis:

Read More »

Difflugia biwae

D. biwae, after Yang and Shen, 2005 Difflugia biwae Kawamura, 1918 Diagnosis: Shell in lateral view fusiform in outline with a straight neck, a conspicuous

Read More »

Difflugia mulanensis

D. mulanensis, after Yang et al., 2015 Difflugia mulanensis Yang, Meisterfeld, Zhang and Shen, 2015 Diagnosis: Shell elongate ovoid like a vase, with a distinct

Read More »

Euglypha bryophila

Euglypha bryophila, after Brown, 1911 (L), from Ecuador (R) Euglypha bryophila  Brown, 1911 Diagnosis: (Original description) The test is very regular in form and subject

Read More »

Vernalophrys

(A) A Scenedesmus cell (arrow) is engulfed by a trophozoite. (B) Several Scenedesmus cells adhere to the surface of a plasmodium that has numerous vacuoles

Read More »