Hyperolius acutirostris Buchholz & Peters in Peters, 1875: 207, pl. 2, fig. 4.

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 acutirostris Buchholz & Peters in Peters, 1875: 207, pl. 2, fig. 4.

Syntypes.

ZMB 8470 and ZMB 65177 (formerly part of ZMB 8470), “Cameruns” [Douala, Region Littoral, Cameroon], coll. Reinhold Wilhelm Buchholz.

Present name.

Hyperolius acutirostris Buchholz & Peters, 1875.

Remarks.

Perret (1966: 408) considered the type material of H. acutirostris lost and designated MHNG 965.12 as neotype. Bauer et al. (1995: 43) could only locate one of the two syntypes. The type locality was corrected to “Douala” by Frétey et al. (2014); for further information see also remarks on Hyperolius guttatus .

The German explorer, zoologist and anatomist Buchholz went to Equatorial Africa from 1872 to 1875. He was accompanied by the Berlin ornithologist Georg Anton Eugen Reichenow and Reichenow’s friend, fellow student and zoologist Wilhelm Lühder. On 1 June 1872 they set off from Bremerhaven to “Akkrá on the Gold Coast" [Accra, Ghana], which they reached on 29 July 1872. The first collecting tours took place in the surroundings of Accra and Aburi (29 July to 16 October 1872). On 16 October they left Accra for “Camaroons” [today part of present day Douala city] where they stayed until 2 November. Then they travelled to Bimbia, Victoria and Bonjonjo (2 November 1872 to 9 December 1873). On 12 March 1873 Lühder died of malaria in ‘Camaroons’. Reichenow, also suffering from malaria, returned via Gabon to Germany in April 1873.

Buchholz was on his own from then on. He travelled between Victoria and `Camaroons’ with intermediate stops on Fernando Pó to get his collections to Camaroons in early December.

Thereafter he went to Abo (9 December 1873 to 24 March 1874) and from Mungo via Balong he returned again to ‘Camaroons’ (5 April to 11 August 1874). He left `Camaroons’ for a stay in Gabon where he also explored the Rembo River (12 August to 9 November 1874). After his return to the Gabon coast he again explored the area around Mungo and Jenssoki (9 November 1874 to 11 January 1875), and again visited Fernando Pó, the Gabon coast and the Ogowe (or Ogooué) River (11 January to 31 August 1875). On 3 September he started from Gabon on his way back to Greifswald where he arrived during the beginning of November 1875 ( Reichenow 1874; Heinersdorff 1880; Weidmann 1894; Stresemann 1943). Buchholz’ collections went to the zoological museums in Greifswald and Berlin and his herpetological material has been described by Wilhelm C. H. Peters ( Peters 1875, 1876).