Results of odonatological studies in southern Primorye, Russia, in 2011-2020

The odonatological results of five expeditions to two ecologically contrasted regions (forested foothills and coastal plains) in southern Primorsky Kray (or Primorye), Russia, undertaken from 2011 to 2020 are summarised. A total of 64 species have been recorded, including those with a limited presence in Russia, such as Lestes temporalis, Paracercion calamorum, P. hieroglyphicum, P. plagiosum (the 4th finding in Russia is reported here), Trigomphus citimus, Macromia manchurica (the 3rd finding in Russia), Deielia phaon, Lyriothemis pachygastra (the 3rd finding in Russia), and Sympetrum baccha. Aeshna caerulea is for the first time reported to Primorskiy Kray, although by a visual observation only. Simultaneous occurrence of the closely related Coenagrion hastulatum and C. lanceolatum was observed. The differences between Anax parthenope and A. julius, assumed to be different species, are discussed and illustrated; systematics of Coenagrion johanssoni, Aeshna juncea, Sympetrum depressiusculum and S. frequens and dimorphism for the frons maculation in males of Epophthalmia elegans are briefly discussed, as well. A steady and profound decrease in number of Odonata for the period 2011-2020 was observed.