Tehran University of Medical Sciences Journal of Arthropod-Borne Diseases 2322-1984 13 1 2019 04 14 827 827 ENGLISH Azim Paksa Department of Medical Entomology and Vector Control, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran Mohammad Mahdi Sedaghat Department of Medical Entomology and Vector Control, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran Hassan Vatandoost Department of Medical Entomology and Vector Control, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran AND Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, Iran Mohammad Reza Yaghoobi-Ershadi Department of Medical Entomology and Vector Control, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran Seyed Hassan Moosa-Kazemi Department of Medical Entomology and Vector Control, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran Teimour Hazratian Departmemt of Parasitology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran Alireza Sanei-Dehkordi Department of Medical Entomology and Vector Control, Faculty of Health, Hormozgan University of Medical Sciences, Bandar Abbas, Iran AND Infectious and Tropical Diseases Research Center, Hormozgan Health Institute, Hormozgan Uni-versity of Medical Sciences, Bandar Abbas, Iran Mohammad Ali Oshaghi Department of Medical Entomology and Vector Control, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran 2018 03 07 Background: The abundance, diversity, distribution and ecology of mosquitoes (Diptera: Culicidae), especially ar­bovirus vectors are important indices for arthropod-borne diseases control. Methods: Larvae and adult mosquitoes were collected using the standard methods from different habitats in nine localities of three counties in the East Azerbaijan Province, Northwestern Iran during June to October 2017. In addi­tion, species richness (R), Simpson’s diversity index (D), Shannon–Wiener index (H̕) and evenness (E) as measures of diversity, were calculated. Results: Overall, 1401 mosquito specimens including 1015 adults and 386 larvae were collected in the study area. The properties of geographical larval habitats were recorded. Four genera along with 10 species were collected and identified, including Anopheles hyrcanus, An. maculipennis s.l., An. superpictus s.l., Aedes caspius, Ae. vexans, Cu­lex pipiens, Cx. theileri, Cx. perexiguus, Culiseta longiareolata and Cs. subochrea. Among the three counties, Ahar region presented the highest species richness (R: 1.5) and diversity values (D: 0.79, H’: 1.74, E: 0.73). Conclusions: This study provides important information on the diversity, distribution and ecology of ten mosquito species in the region. This information leads to a better understanding of mosquito population dynamics in relation to vector control measures. https://jad.tums.ac.ir/index.php/jad/article/view/827 https://jad.tums.ac.ir/index.php/jad/article/download/827/441