Paul Hahnel (17 April 1843, Schlegenburg in Leobsanütz, Silesia - 12 May 1887, Manicore) He collected Lepidoptera and Coleoptera in Venezuela (1877/79) and made two Amazon expeditions the first 1879-1884) and the second, with Otto Michael 1885/87). His collection was sold to Otto Staudinger and Andreas Bang-Haas
Based on Hahnel's collection of frogs from Yurimaguas, Peru, George Albert Boulenger described eight new species and named one of them, Ameerega hahneli, after him.
- Fassl, A. H. 1921 [Hahnel, P.] Ent. Z. 35(13) 49-50.
- Lamas, G. 1981 [Hahnel, P.] Rev. Per. Ent. 23 1980(1) 25-31.
- Staudinger, O. 1890: [Hahnel, P.] Dt. Ent. Z. Iris 3(1) 128-132.