Rusavskia drevlyanica

The species epithet drevlyanica alludes to its prevalent location, the Drevlyansky Nature Reserve in Ukraine.

The type specimen was collected in the vicinity of the Hannivka village (Zhytomyr Oblast), specifically on the roof of an old sheepfold building.

It takes on a rosette-like shape with prominently visible thalline lobes that measure 5–8 mm in length.

These lobes initially appear narrow and flat, gradually growing distant from each other to form a net-like thallus.

These apothecia have a flat disc and are distinctly attenuated at their base, often resembling a button or a lamp in shape.

While similar in some aspects to Zeroviella esfahanensis, the two differ in terms of thalline lobe dimensions, apothecia size, and distribution.

Its primary habitat is the East European forest steppe of Ukraine, especially abundant in the Drevlians Nature Reserve.