Genus Parmulina Penard, 1902
Diagnosis: Test in lateral view hemispherical, compressed laterally, in oral view ovoid; slit-like pseudostome when folded. Test clear, flexible, chitinoid, opaque, attached debris. Pseudopods rare, bluntly lobate. Endoplasm granular. One vesicular nucleus. Feeding: herbivorous. Habitat: dry mosses (on trees and roofs).
Tests with broad protuberances Tests with one or more broad or blunt protuberances which are conical, bud, wrath or nipple-shaped. They may be present as
Acuminate tests Tests with one or more spines or bud-like or conical protuberances or just a pointed fundus D. acuminata D. congolensis D. ventricosa D.
Difflugia subaequalis, from Penard, 1910 Difflugia subaequalis Penard, 1910 Diagnosis: Test almost spherical, slightly elongated, with a wide pseudostome, almost as wide as the test
Difflugia ampullula, after Playfair, 1918 Difflugia ampullula Playfair, 1918 Diagnosis: Test broadly ovate, with hemispherical fundus, and sides gradually converging in almost straight lines to
Difflugia stepaneki, from Hager and Haagerova, 1970 Difflugia stepaneki Hager and Haagerova, 1970 Diagnosis: Test broad elliptical, circular in cross-section, with a short neck that