Aspidiophorus oculifer is described as a rare species (Schwank, 1990) and I have so far only found 2 specimens. The first was among floating aquatic plants in the Mühlweiher Litzelstetten and the second specimen in the mud of the Simmelried.

My specimens were slightly smaller at 100 µm and 111 µm than those reported by Schwank (115–135 µm). A key identification feature are the ocelli (also called pseudocells), which can sometimes also consist of an aggregation of ocellar granules, as was the case with my specimens (s. fig. 2). The dorsal scales of Aspidiophorus oculifer are very small and their shape is difficult to discern due to their overlapping arrangement. Only when the scales can be detached by shifting the cover glass does their shape, similar to a birch leaf, become visible (s. fig. 4). In my specimens, the dorsal scales were 3.6-3.9 µm long.