The Entomological Society of Iran Journal of Insect Biodiversity and Systematics 2423-8112 10 2 2024 02 14 New data on the spider fauna of Iran (Arachnida: Araneae), Part XI. 285 309 20590 10.61186/jibs.10.2.285 EN Alireza Zamani Zoological Museum, Biodiversity Unit, FI-20014 University of Turku, Turku 20500, Finland. 0000-0002-8084-9666 Sergei L. Esyunin Perm State University, Bukireva Street 15, Perm 614068, Russia. 0000-0003-3813-1316 Kirill G. Mikhailov Zoological Museum MGU, Bolshaya Nikitskaya Str. 2, Moscow 125009, Russia. 0000-0002-3304-5470 Yuri M. Marusik Institute for Biological Problems of the North, FEB RAS, Portovaya Str. 18, Magadan 685000, Russia [1]; Altai State University, Lenina Pr., 61, Barnaul, RF-656049, Russia [2]; Department of Zoology & Entomology, University of the Free State, Bloemfontein 9300, South Africa [3]. 0000-0002-4499-5148 Journal Article 2024 01 09 New faunistic and taxonomic data are provided for 18 families of Iranian spiders. Four species, Cryptodrassus liyanicus Zamani & Marusik, sp. n. (♀, Bushehr Province; Gnaphosidae), Mesiotelus khorasanicus Zamani & Marusik, sp. n. (♂♀, Razavi Khorasan Province; Liocranidae), Nurscia minuscula Zamani & Marusik, sp. n. (♀, West Azerbaijan Province; Titanoecidae) and Talanites farsensis Zamani & Marusik, sp. n. (♀, Fars Province; Gnaphosidae), are described as new to science. Clubiona liachviana Mcheidze, 1997 stat. reval. (Clubionidae) is removed from the synonymy with C. alpicola Kulczyński, 1882 and is reported from Armenia, Azerbaijan, Iran and Turkmenistan for the first time; additionally, its previously unknown male is described. The genus Kishidaia Yaginuma, 1960 (Gnaphosidae) and a total of 10 species are recorded in Iran for the first time, and new provincial records are provided for 20 species. Two specimens from Iraq are also reported. Considering the results of this paper, the number of species of spiders known from Iran is increased to 980 species in 329 genera. Armenia Azerbaijan iraq new record new species Taxonomy Turkmenistan https://jibs.modares.ac.ir/article_20590_224267fe94355723e31177a2ca4851b2.pdf