The genus Coenagrion Kirby, 1890 (Odonata: Coenagrionidae) in the Russian part of the Caucasus Author Kosterin, Oleg E. 0000-0001-5955-4057 Institute of Cytology & Genetics SB RAS, Acad. Lavrentyev ave. 10, Novosibirsk, 630090, Russia. kosterin@bionet.nsc.ru Author Onishko, Vladimir V. 0000-0002-6469-6778 Moscow Zoo, Department of Herpetology, Bolshaya Gruzinskaya Str. 1, Moscow 123242 Russia. wervolf999@yandex.ru Author Ilyina, Elena V. 0000-0002-5426-4015 Precaspian Institute of Biological Resources of the Daghestan Federal Research Centre of the Russian Academy of Sciences, Dagestanskiy State Nature Reserve, Gagarina Street 120, Makhachkala, Republic of Dagestan, Russia. carabus@list.ru Author Chepurnov, Grigory Yu. 0009-0000-8268-0289 Institute of Cytology & Genetics SB RAS, Acad. Lavrentyev ave. 10, Novosibirsk, 630090, Russia. & Institute of Molecular and Cellular Biology SB RAS, Acad. Lavrentyev ave. 8 / 2, Novosibirsk, 630090, Russia. grigory.tchepurnov@yandex.ru Author Blinov, Alexander G. 0000-0002-4971-6312 Institute of Cytology & Genetics SB RAS, Acad. Lavrentyev ave. 10, Novosibirsk, 630090, Russia. & Institute of Molecular and Cellular Biology SB RAS, Acad. Lavrentyev ave. 8 / 2, Novosibirsk, 630090, Russia. blinov@bionet.nsc.ru text Zootaxa 2024 2024-06-18 5471 2 151 190 http://dx.doi.org/10.11646/zootaxa.5471.2.1 journal article 298715 10.11646/zootaxa.5471.2.1 3a469638-dc21-45a3-80f6-cb307fbf5941 1175-5326 12189904 BAA047F4-2D65-4E52-8798-D426E3B26DA1 Coenagrion pulchellum The Caucasian specimens of C. pulchellum do not show any transition towards the related and externally very similar species C. persicum confined to Central Iran , following the delicate morphological differences between these species illustrated by Schneider et al. (2016) . C. persicum differs from C. pulchellum as follows: males: tooth disposed almost at middle of trunk ( Fig. 2n ) rather than at ca 2/3 of its length ( Fig. 2o–q ); paraproct prominence directed caudad ( Fig. 3n ) rather than ventro-caudad; ( Fig. 3o–q ); females: incisions between pronotum lobe sinuous ( Fig. 7i ) rather than more or less triangular ( Fig. 7j ).