Microworld

world of amoeboid organisms

Menu
Apogromia-verbrugghei
Apogromia-verbrugghei
A. verbrugghei

Apogromia De Saedeleer, 1934

Diagnosis: Test hyaline, small, flask-shaped, with single terminal aperture, with or without a distinct neck; outline circular, sometimes irregular or angular. No septum. Test composed of an organic material without any embedded xenosomes; color usually yellow-brown till dark-brown. Cytoplasm with symmetrical bundle of granulopodia (peduncle or “Pseudopodienstiel”), very thin, suppressed to the substrate and able to branch and anastomose, thus forming a network or reticulum. Nucleus relatively large, globular with a central nucleolus. One contractile vacuole.

Ecology: freshwater and marine; shallow, ironrich water, Spagnum.

Remarks: the main difference between Microgromia and Apogromia is the presence of a septum in the first one. De Saedeleer describes three species, but I’m unable to distinguish between A. flandriensis and A. lemercieri. The distinction is only based on the visibility of the pseudopodia, which in my opinion isn’t very useful as a diagnostic character.

Test spherical or ovoid, symmetrical, with distinct neck A. mucicola
Test asymmetrical, with broad neck A. flandriensis
Test pyriform or ovoid, with or without distinct neck A. verbrugghei
Test pyriform or ovoid, without distinct neck Apogromia spec.
Test balloon-shaped, with tubular neck; neck not fastened to the substrate Apogromia spec.
Test balloon-shaped or broad ovoid, without neck Apogromia spec.
Test globular or broadly bell-shaped, with short tubular neck A. pagei
Test pear-shaped with a wide aperture, with typical Y-shaped pseudopodium stalk Apogromia spec.
Test elongated ovoid, like a sausage Apogromia spec.

Apogromia spec.
Apogromia verbrugghei
Apogromia spec.
Recent posts

Bullinularia maxima

Bullinularia maxima – from Bobrov and Mazei, 2020 Bullinularia maxima Bobrov et Mazei, 2020 Diagnosis: Shell brown, opaque, elliptical in ventral view; ventral surface is

Read More »

Bullinularia macroporum

Bullinularia macroporum – from Bobrov and Mazei, 2020 Bullinularia macroporum Bobrov et Mazei, 2020 Diagnosis: Shell yellow-brownish, transparent, circular in ventral view; ventral surface is

Read More »

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 »