Hyalosphenia schoutedeni Van Oye, 1926

Diagnose. Shell Shell ovoid in broad view, narrow elliptical in profile, transparent and hyaline. Pores absent. Pseudostome elliptical in frontal view, strongly thickened inwards, and thus clearly visible.

Dimensions: According to Van Oye (1926): Shell length 40–65 μm; width 23–40 μm.

Ecology: Freshwater, mud, Sphagnum, soils, on bat guano in caves.

Geographical distribution: Africa: Congo, West Africa; South America: Chile; Asia: Vietnam.

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.