Hyperolius friedrichsi Ahl, 1930d: 67.

Tillack, Frank, Ruiter, Ronald de & Roedel, Mark-Oliver, 2021, A type catalogue of the reed frogs (Amphibia, Anura, Hyperoliidae) in the collection of the Museum fuer Naturkunde Berlin (ZMB) with comments on historical collectors and expeditions, Zoosystematics and Evolution 97 (2), pp. 407-450 : 407

Hyperolius friedrichsi Ahl, 1930d: 67.

Holotype.

ZMB 30637, "Antananarivo, Madagaskar" [Analamanga Region, Madagascar], coll. Karl Friedrichs [sic] aus Rostock.

Present name.

Heterixalus betsileo (Grandidier, 1872).

Remarks.

Depicted in Ahl (1931b: 422, fig. 295). From October 1914 until the end of 1915, the German zoologist and colonial officer Prof. Dr. Friederichs, who was a prisoner of war during the First World War, collected in the courtyard of the French Fort Duchesne (on a hill opposite of Antananarivo, ca. 1400 m a.s.l.). Later, he continued collecting until 1916 on Kap Diego [Cap Diego, Antsiranana I District, Diana Region, Diego Suarez Province] in northern Madagascar ( Schultheß 1918; Friederichs 1919).