Light (A, C) and scanning electron (B, D-I) micrographs of Heleopera sylvatica. (A, B) View of many specimens to illustrate variability in shape and size of the shell. (C) View of live specimen showing granular cytoplasm and numerous pseudopodia. (D) Broad lateral view showing shape and regular arrangement of shell-plates. (E) Apertural view to show a narrow, elliptical aperture. (F) Lateral view showing acute commissures of the aperture. (G) Latero-apertural view. (H) Close up view of elliptical aperture to show the bordering thin collar of organic cement. (I) Detail of shell surface showing shape and arrangement of shell-plates.

  Part of: Todorov M, Bankov N (2019) An Atlas of Sphagnum-Dwelling Testate Amoebae in Bulgaria. Advanced Books.