Microcorycia spec.

Dimensions: 27-43 µm, n=45.

Habitat: mosses on walls and roofs.

Remarks: I only found empty membranes. The structure of the shell resembles that described by Penard for Microcorycia flava, which is much larger.

Below is another species. It looks like a Pseudochlamys, but I’ve never found trophic cells.