The fauna of Iranian Elateridae (Coleoptera: Elateroidea) is summarized in this paper. In total 245 species from 58 genera and 7 subfamilies Agrypninae Candèze (13 genera, 36 species), Cardiophorinae Candèze (4 genera, 55 species), Cebrioninae Latreille (2 genera, 6 species), Dendrometrinae Gistel (13 genera, 28 species), Elaterinae Leach (23 genera, 104 species), Lissominae Laporte (1 genus, 1 species) and Negastriinae Nakane & Kishii (2 genera, 15 species) are listed in literature as the fauna of Iran. Totally 74 species are endemic to Iran.

One new genus (Roznerathous gen. n.) and 31 new species of Elateridae are described: Athous szalokii sp. n. (Georgia), Agriotes balikesirensis sp. n. (Turkey), Agriotes rozneri sp. n. (Syria), Agriotes sakaryaensis sp. n. (Turkey), Cardiophorus anatolicus sp. n. (Turkey), Cardiophorus aranyos sp. n. (Afghanistan), Cardiophorus burkus sp. n. (Afghanistan), Cardiophorus dicronychoides sp. n. (Afghanistan), Cardiophorus podlussanyi sp. n. (Turkey), Cardiophorus tenuis sp. n. (Armenia), Coptostethus attilai sp. n. (Spain: Canary Isl.), Coptostethus buci sp. n. (Spain: Canary Isl.), Coptostethus kundratai sp. n. (Spain: Canary Isl.), Craspedostethus ferrugineus sp. n. (Iran), Craspedostethus hirticollis sp. n. (Afghanistan), Dicronychus decoroides sp.n. (Iran), Dicronychus diluvii sp. n. (Turkey), Dicronychus fabiani sp. n. (Iran), Dicronychus gurjevae sp. n. (Afghanistan), Dicronychus ilniczkyi sp. n. (Oman), Dicronychus kandaharensis sp. n. (Afghanistan), Dicronychus karolyvigi sp. n. (Iran), Dicronychus podlussanyi sp. n. (Turkey), Dicronychus povolnyi sp. n. (Afghanistan), Dicronychus quadrimaculatus sp. n. (Afghanistan), Glyphonyx occidentalis sp. n. (Afghanistan), Hartenius marocanus sp. n. (Morocco), Hemicrepidius rahmei (Iran) sp. n., Idotarmonides gracilis sp. n. (Turkey), Roznerathous hellenicus sp. n. (Greece), Oedostethus pektusanicus sp. n. (North Korea). Dicronychus marginalis comb. n. and Dicronychus oxypterus comb. n. New distributional data for species of the genera Aeoloides, Agriotes, Ampedus, Cardiohypnus, Cardiophorus, Cidnopus, Craspedostethus, Dicronychus, Drasterius, Haterumelater, Heteroderes, Hypnoidus, Isidus, Limonius, Liotrichus, Melanotus, Pseudocrepidophorus and Zorochros are given. The females of Astanchus ussuriensis (Gurjeva, 1975); Cidnopus macedonicus Cate et Platia, 1989; Peripontius orchymonti Platia, 2008 and the male of Agriotes barkulensis Jagemann, 1942 were unknown at the time of their description, are figured. With 137 figures.

This paper provides new records and descriptions of eight new species of clickbeetles (Coleoptera, Elateridae) from Iran and Iraq. The species are grouped according to tribes and the new taxa belong to the genera Calais Castelnau, Idotarmonides Agajew, Melanotus Eschscholtz, Craspedostethus Schwarz, Dicronychus Brullé; new names are proposed for two species of Cardiophorus Eschscholtz (preoccupied).

Examination of specimens of Dicronychus Brullé in the King Saud University Museum of Arthropods, Riyadh, Saudi Arabia revealed the presence of two new species, D. latifae n. sp. and D. bushrae n. sp. In addition, the descriptions of D. talhouki Platia and Schimmel and D. brancuccii Platia and Schimmel are augmented after examination of both type material and recently collected specimens from the Kingdom of Saudi Arabia.

In this study, two new species of click-beetles, Ampedus turcicus n. sp. and Athous (Orthathous) demirsoyi n.sp., are described from Turkey. The morphologies of these new species and their genital organs are described, photographs of each species and character details are provided, and distribution maps are given.