First survey of the dragonfly fauna (Insecta, Odonata) of northwestern Bosnia
The results of the first study of the dragonfly fauna in northwest Bosnia are presented. Field surveys were conducted in summer 2012 and 2013, resulting in the identification of 36 species. Out of these, 34 are new for the region. The present paper gives a detailed overview of the results and a comparison of the dragonfly fauna composition of the region studied with the neighboring areas within Bosnia and Herzegovina and Croatia is made. The most abundant species were: Calopteryx virgo (Linnaeus, 1758), Sympetrum sanguineum (Müller, 1764), Onychogomphus forcipatus (Linnaeus,1758), Somatochlora meridionalis Nielsen, 1935, Calopteryx splendens (Harris, 1782) and Platycnemis pennipes (Pallas, 1771). Noteworthy are the records of Chalcolestes viridis (Vander Linden, 1825) and Coenagrion scitulum (Rambur, 1842), two species that are rare in Bosnia and Herzegovina, and also Coenagrion ornatum (Selys, 1850) and Cordulegaster heros Theischinger, 1979, species of European conservation concern. Distribution and the status of these species and the conservation of dragonfly species in the country are briefly discussed. The data collected represent an important contribution to the knowledge of the dragonfly fauna of the Una River basin and Bosnia and Herzegovina.