Hyperolius flavoguttatus Ahl, 1931a: 96.

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 flavoguttatus Ahl, 1931a: 96.

Holotype.

ZMB 39011, “Bukoba” [Bukoba Urban District, Kagera Region, Tanzania], coll. Franz Ludwig Stuhlmann.

Paratypes.

ZMB 75607 (formerly part of ZMB 39011), from “Bukoba”, coll. Stuhlmann and ZMB 85757, “Kenia”, coll. Johann Georg Kolb, 1894.

Present name.

Hyperolius viridiflavus ( Duméril & Bibron, 1841).

Remarks.

Depicted in Tornier (1896: 136, fig. 1) and redrawn in Ahl (1931b: 370, fig. 245). According to Ahl (1931a: 97) the original series consists of five specimens from “Bukoba”, including the “Type” and from “Kenia”, collected by Stuhlmann and Kolb. Another paratype MCZ A-17635 from “Bukoba”, coll. Stuhlmann, was sent to MCZ in exchange in 1932 ( Barbour and Loveridge 1946: 128). The fourth paratype could not be located.

The German zoologist, cartographer, explorer and colonial official Stuhlmann spent a total of 14 years in East Africa. With the financial support of the Akademie der Wissenschaften [Academy of Sciences] zu Berlin, he investigated the coastal regions of Zanzibar and the adjacent mainland including “Usegúa” and “Ungúu” in present-day Tanzania in the summer of 1888; then, until mid-1889, the area of the Zambezi estuary around Quelimane in Mozambique. From April 1890 to 1892, Stuhlmann participated as a scientist, together with Lieutenant Wilhelm Langheld, on the expedition of Mehmed Emin Pasha [also known as Eduard Karl Oskar Theodor Schnitzer] to the German East African colonial area. The expedition led them from Bagamoyo (26 April 1890) via Tabora (29 July) to Bukoba on Lake Victoria (November 1890). From here, Stuhlmann undertook a trip on Lake Victoria to Murchison Bay in Uganda (December 1890) and reached Mengo Mountain (26 to 29 December) via Manjongo [Rubaga Division, Kampala District, Central Region, Uganda]. After his return to Bukoba, he set off (12 February 1891) towards the west in the Karagwe Region, and after crossing the Kagera River (06 April 1891), the expedition reached the southwestern tip of Lake Edward in early May 1891. The expedition turned west of Lake Edward another 250 km to the north, but was terminated in mid-September 1891 due to insurmountable difficulties. With a group of 27 askaris (local soldiers serving in European colonial armies) and 100 porters Stuhlmann went back to Bukoba, where he arrived on 17 March 1891. Emin Pasha, in contrast decided to stay behind with sick expedition members, turned southwest towards the Congo River and was murdered by Arab slave traders 80 km from this destination at Kinene on Mwiko River on 20 October 1892. Stuhlmann’s herpetological collections from these expeditions were sent to Johann Georg Pfeffer at the Zoologische Museum Hamburg, who published the first results ( Pfeffer 1889, 1893). Parts of these collections, including “Doubletten” [doublets], were later donated to ZMB ( Stuhlmann 1893; Tornier 1896). In July 1892 Stuhlmann returned to Bagamoyo on the East African coast, where he engaged in cartography and other scientific activities in Dar-es-Salaam and its surroundings until 1901. Between December 1900 and June 1901 Stuhlmann visited India, Sri Lanka, Singapore, and Indonesia. After returning to Africa, he was offered the post of the director of the "Biologisch-Landwirtschaftliche Institut Amani" [Agro-biological Institute Amani] in Usambara in July 1901, a post he took up in June 1903 and held until the end of 1905. During his last stay in Africa from December 1906 to January 1908, he worked in Amani primarily on the completion of his "Kulturgeschichte von Ostafrika" [Cultural history of East Africa] published in 1909. After various tropical diseases, he left the African continent at the age of 43 years with his health “exhausted” on 27 January 1908, and returned to Germany ( Stuhlmann 1891, 1893, 1894, 1909; Danckelmann 1891, 1892; Weidmann 1894; Schnee 1920b; Bindseil 2008; Schabel 1990; Wenzel Geißler et al. 2020).