Quadrulella symmetrica¬†(Wallich) (Hyalospheniidae)  
  Part of: Bankov N, Todorov M, Ganeva A (2018) Checklist of Sphagnum-dwelling testate amoebae in Bulgaria. Biodiversity Data Journal 6: e25295. https://doi.org/10.3897/BDJ.6.e25295