Hyalosphenia irregularis Decloitre, 1965

Diagnose. Shell ovoid, narrow elliptical in broad view, with a pointed posterior end, giving it an irregular shape. Shell transparent with a yellowish tinge. Aperture elliptical, narrow, thickened inwards.

Dimensions: Shell length 60–70 µm; width 45–50 µm; aperture 10–15 µm.

Ecology: Unknown. No detail was provided in the original description.

Geographical distribution: Africa: Congo

References: Kosakyan, A., Meisterfeld, R., Lara, E., Duckert, C., Mitchell, E., 2025. A taxonomic monograph of hyalospheniid testate amoebae. Amoebozoa: Arcellinida: Hyalospheniformes, Mémoire XIV. Éditions Alphil-Presses universitaires suisses, Neuchâtel.