Valkanovia delicatula (Valkanov, 1962) Tappan, 1966

Diagnosis: Shell ovoid, oblate, elliptical in cross-section, composed of elongated elliptical hyaline scales arranged in a brick-like manner; edge of the platelets regularly rounded and free from approaches. Pseudostome round, with a diameter of 5.5 µm, bordered by a slightly thickened rim formed from the chitinoid ground substance of the shell. In general, the shell is extremely delicate and thin-walled.

Dimensions: Length 42 μm, width 24 μm. Scales 4-5 µm in length.

Habitat: Soil, between moist oak leaves, Bulgaria.