Euglypha laevis (Ehrenberg, 1845) Perty, 1849

Diagnosis. The original description of E. laevis by Perty (1849) is “Schale glatt, hyalin, strukturlos, ohne Tuberkel oder Zellen. L. 1/32 – 1/18‴.”
Translated from German: “Shell smooth, hyaline, structure-less, without tubercles or cells. L. 1/32 – 1/18‴.”

Dimensions: The triple prime ‴ represents a ligne (1⁄12 of a “French” inch, or pouce, about 2.26 millimetres or 0.089 inches). That means that the length of Perty’s species is 70—125 um.

Habitat: Perty (1849): Bern, Juni; Simplon, Aug., Switzerland.

Remarks: Perty: “It is at least possible that all Euglypha known to date are only forms of the same species.” The adjective ‘laevis’means: smooth, without hairs.

Given this very brief description, E. laevis is an unidentifiable species. This can be easily demonstrated by drawings and photographs by various authors published under that name, see the following collection and notice the different shapes of the oral scales: