Review and contribution to the stonefly (Insecta: Plecoptera) fauna of Azerbaijan Author Murányi, Dávid Department of Zoology, Eszterházy Károly University, Leányka u. 6, H- 3300 Eger, Hungary. Author Manko, Peter Department of Ecology, University of Prešov, 17. novembra 1, SK- 08001 Prešov, Slovakia. Author Kovács, Tibor Mátra Museum of Hungarian Natural History Museum, Kossuth Lajos u. 40, H- 3200 Gyöngyös, Hungary. Author Vinçon, Gilles 55 Bd Joseph Vallier, F- 38100 Grenoble, France. Author Žiak, Matej Andrej Kmeť Museum, Slovak National Museum - Museums in Martin, Andreja Kmeťa str. 20, SK- 03601 Martin, Slovakia. Author Kerimova, Ilhama G. Institute of Zoology, Azerbaijan National Academy of Sciences, 504 th block 1128 th Side Str., A. Abbaszadeh Str., AZ- 1073 Baku, Azerbaijan. Author Snegovaya, Nataly Yurievna Institute of Zoology, Azerbaijan National Academy of Sciences, 504 th block 1128 th Side Str., A. Abbaszadeh Str., AZ- 1073 Baku, Azerbaijan. Author Oboňa, Jozef Department of Ecology, University of Prešov, 17. novembra 1, SK- 08001 Prešov, Slovakia. text Zootaxa 2021 2021-05-24 4975 1 58 80 journal article 6196 10.11646/zootaxa.4975.1.2 b4c650a9-c917-4f03-aeed-e63058aaade7 1175-5326 4804613 EEFD3FFF-79E1-4EED-B74C-295A33CA50DA Leuctra hippopus Kempny, 1899 Şəki-Zaqatala region: 20: 5♂ 16♀ (HNHM), 7♂ 9♀ (LMEE); 22: 1♀ (HNHM), 1♂ 2♀ (LMEE); 25: 2♀ (HNHM); 29: 1♂ 4♀ (HNHM), 1♂ (LMEE); 33: 2♀ (HNHM), 2♂ 1♀ (LMEE); 34: 11♂ 7♀ (HNHM), 6♂ 4♀ (LMEE); Naxçıvan : 36: 1♀ (HNHM). Remarks. A widespread and common species in the whole West Palaearctic, with wide ecological spectrum (Graf et al. 2009). In the Caucasian region, it is known from Armenia , Georgia , Kabardino-Balkaria, North Ossetia and Stavropol Krai (Zhiltzova 2003, Cherchesova & Zhiltzova 2013 ). A spring and early summer species, in Azerbaijan we found it mostly along forest streams, in moderate numbers. These specimens provide the first confirmed locations for this species in Azerbaijan .