world of amoeboid organisms

Galeripora naiadis
G. naiadis – after González-Miguéns et al., 2021

Genus Galeripora González-Miguéns, Soler-Zamora, Villar-dePablo, Todorov & Lara, 2021

Diagnosis: Tests built exclusively with proteinaceous organic material. Shape more or less campanulate, with a central and circular aperture and radial symmetry. The aperture is surrounded by pores. The ultrastructure of the test is composed of hexagonal units that are at least partially covered with an organic matrix layer. Commonly, two or more nuclei, situated at opposite sides of the cytoplasm.

Type species: Galeripora sitiens González-Miguéns, Soler-Zamora, Villar-dePablo, Todorov & Lara, 2021

Included taxa:
G. arenaria (Greef, 1866) González-Miguéns et al., 2021
G. balari González-Miguéns et al., 2021
G. bathystoma (Deflandre, 1928) González-Miguéns et al., 2021
G. bufonipellita González-Miguéns et al., 2021
G. catinus (Penard, 1890) González-Miguéns et al., 2021
G. discoides (Ehrenberg, 1843) González-Miguéns et al., 2021
G. galeriformis González-Miguéns et al., 2021
G. naiadis González-Miguéns et al., 2021
G. polypora (Penard, 1890) González-Miguéns et al., 2021
G. sitiens González-Miguéns et al., 2021
G. succelli González-Miguéns et al., 2021

Literature: González-Miguéns, R., Soler-Zamora, C., Villar-Depablo, M., Todorov, M., Lara, E., 2021. Multiple convergences in the evolutionary history of the testate amoeba family Arcellidae (Amoebozoa: Arcellinida: Sphaerothecina): when the ecology rules the morphology. Zoological Journal of the Linnean Society zlab074. https://doi.org/10.1093/zoolinnean/zlab074

Recent posts


A. rotundistoma, from Korganova, 1987 Genus Apolimia Korganova, 1987 Diagnosis: Shell ovoid, quite large, opaque, round in cross section, densely covered with round or oval

Read More »


E. bidens, 315 and 270 µm, Naardermeer, the Netherlands Genus Erugomicula Nasser, Gregory, Singer, Patterson and Roe, 2021 Typespecies: Erugomicula bidens (Penard, 1902) Diagnosis: laterally-compressed,

Read More »

Erugomicula bidens

Two shells from the same sample, 310 µm (Naardermeer, Netherlands) Erugomicula bidens (Penard, 1902) Basionym: Difflugia bidens Penard, 1902 Diagnosis: Test ovoid, compressed in cross-section,

Read More »


Infraorder Cylindrothecina González-Miguéns et al., 2022   Diagnosis:  can be diagnosed by its specific sequences of the mitochondrial and nuclear DNA  markers (COI, NADH and

Read More »

Organic-walled species

Specimen with an optical cross-section of the peduncle (left) Organic-walled species Diagnosis: Multinucleated organic-walled monothalamous foraminifera. Test spherical to oval shaped, with a hyaline, flexible,

Read More »

Velamentofex tyrolensis

V. tyrolensis, two specimens Velamentofex tyrolensis Völcker and Clauß, 2020 April 2022, I found two specimens in a sample from the pond in Crailoo, Netherlands. I could

Read More »

Raphidiophrys spec. nov.

Raphidiophrys n. sp. Raphidiophrys n. sp. Diagnosis: Plate-scales canoe-shaped, elongated, with tapering, rounded poles, slightly curved upwardly. Light microscopically, these plate-scales show a clear rim;

Read More »

Lacogromia spec. Naardermeer

Lacogromia sp., Naardermeer, the Netherlands, 2022 (n=nucleus) Lacogromia sp. Six living specimens were found in an old sediment sample from a freshwater ditch in nature

Read More »

Sphenoderia rhombophora

S. rhombophora , after Bonnet, 1966 Sphenoderia rhombophora Bonnet, 1966 Diagnosis: Test hyaline, ellipsoidal, very slightly compressed. Fundus relatively narrow. Pseudostome largely truncated. Neck very

Read More »

Sphenoderia ovoidea

S. ovoidea , after Jung, 1942 Sphenoderia ovoidea Jung, 1942 Diagnosis: Shell with four layers of plate-scales. Distinguished from S. fissirostris by the ovoid tapering

Read More »