New data on the Odonata fauna in northwestern Iran – provinces Zanjan and Qazvin

New data on the Odonata fauna of the provinces of Zanjan and Qazvin in north-western Iran are presented. These data are based on adult specimens of dragonflies and damselflies collected from various sites. The study investigates the species distribution and faunal composition of Odonata in the study area. In total, 14 species of Anisoptera and 9 species of Zygoptera were recorded, including the first documentation of 17 species in Zanjan and 15 species in Qazvin. Photographs of the collected odonates are included, along with comments on their diagnostic characteristics and distribution. Additionally, a case of abnormality in the male caudal appendages of Ischnura pumilio is reported, possibly attributable to either a genetic defect or environmental factors.