Testate amoebae with agglutinate shells: (A-D) shells composed of foreign material from the environment (xenosomes); (A, B) Difflugia oblonga; (C, D) Pontigulasia rhumbleri; (E-H) shells composed of siliceous shell-plates with different shape and size, obtained by predation mainly on small euglyphids; (E, F) Gibbocarina galeata; (G, H) Heleopera sylvatica.

  Part of: Todorov M, Bankov N (2019) An Atlas of Sphagnum-Dwelling Testate Amoebae in Bulgaria. Advanced Books. https://doi.org/10.3897/ab.e38685