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 Perla caucasica Guérin-Méneville, 1843 Şəki-Zaqatala region: 20: 1♂ larva (HNHM); 25: 1♀ larva (HNHM), 1♂ larva (LMEE); 26: 1♂ 2♀ larvae (HNHM), 1♂ 1♀ larvae (LMEE); 31: 1♂ larva (HNHM). Remarks. This species is considered widespread in the Caucasian region, the whole of Anatolia , Cyprus and the Alborz of Iran ( Sivec & Stark 2002 , Darilmaz et al. 2016 ). This is contrary to Teslenko & Zhiltzova (2009) and Cherchesova & Zhiltzova (2013) who considered it an endemic of the Greater Caucasus. This difference of opinion is based on the disputed synonymy of Perla abbreviata Klapálek, 1921 and P. persica Zwick, 1975 . These species were synonymized under P. caucasica due to their similar eggs ( Sivec & Stark 2002 ), however, their larvae are distinctly different. Similarly to the above species, our identification is based on larvae that agrees well with the recent description of the larva of P. caucasica from the Greater Caucasus ( Zhiltzova & Cherchesova 2003 ). Perla caucasica is a more potamal species than P. pallida . Azerbaijan specimens occurred in low and medium-high elevations, mostly in small rivers. These are the first exact locality data from Azerbaijan .