TY - JOUR ID - 121589 TI - New Data on Latrodectus tredecimguttatus Rossi, 1790, the Medically Important Spider Species (Araneae: Theridiidae) from Iran JO - Archives of Razi Institute JA - ARI LA - en SN - 0365-3439 AU - Mohammadi Bavani, M AU - Shafaie, S AU - Chavshin, A. R AU - Dabiri, F AU - Badakhshan, M AU - Naghian, A AU - Entezar Mahdi, R AU - Seyyed-Zadeh, S. J AU - Rafinejad, J AU - Saeedi, Sh AU - Rasegh, P AD - Department of Medical Entomology and Vector Control, School of Public Health, Urmia University of Medical Sciences, Urmia, Iran AD - Department of Biology, Faculty of Sciences, Ferdowsi University of Mashhad, Mashhad, Iran AD - Department of Epidemiology, School of Medicine, Urmia University of Medical Sciences, Iran AD - Department of Medical Entomology and Vector Control, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran AD - Disease Control Unit, Makoo Health Center, Urmia University of Medical Sciences, Urmia, Iran Y1 - 2021 PY - 2021 VL - 76 IS - 2 SP - 385 EP - 390 KW - Araneae KW - Iran KW - Latrodectus tredecimguttatus KW - Theridiidae DO - 10.22092/ari.2020.341960.1446 N2 - Spiders are one of the most important orders of Arachnida comprising more than 48,000 species in the world. Except for families Uloboridae and Holarchaeidae, all others are classified as the venomous spider. However, only about 200 species are medically relevant and cause public health problems or even death. In Iran, there are 51 families and 763 species of spiders, of which the families, Theridiidae and Sicariidae are dangerous for the human being, and the first one is more prevalent. The Latrodectus is considered one of the most poisonous spiders in the world and Iran. This genus has five species in Iran, among which Latrodectus tredecimguttatus (black widow spider or “Dolmak”) is considered one of the most poisonous spiders in Iran. Therefore, this study aimed to investigate this species in the Northwest of Iran (West Azerbaijan, East Azerbaijan, and Ardabil provinces, Iran). Spatial distribution maps were prepared using GIS 9.4. In the current study, five adult female spiders were collected from Germi and Ardabil cities (Ardabil Province), Ahar County (East Azerbaijan province), and Urmia city (West Azerbaijan province) of Iran.  These species were first observed in Ardabil province, Iran. Therefore, the presence of Latrodectus species under the rocks in wheat farms in this corner of Iran may be a threat to farms and visitors. People in these areas should wear gloves and avoid any activity that disturbs the spiders and make them aggressive. UR - https://archrazi.areeo.ac.ir/article_121589.html L1 - https://archrazi.areeo.ac.ir/article_121589_898e5116e3257fcc5e88880ee0e02d19.pdf ER -