Click beetles (Coleoptera: Elateridae) of Khuzestan province (Iran): with three new species, Craspedostethus izehensis sp.n., Dicronychus khuzestanicus sp. n. and Gurjevelater catei sp. n.

More than 730 specimens of Elateridae were collected in Khuzestan province. Thirty three species belonging to 18 genera and five subfamilies are listed. Three new species, Craspedostethus izehensis sp. n., Dicronychus khuzestanicus sp. n., Gurjevelater catei sp. n. are described, along with the female of Aeoloides iranicus Platia & Gudenzi, 2002. Dicronychus houschkai Platia, 2011 is recorded as a new species to Iran. A distributional map and climate data for each species, along with photographs of habitus and genitalia of eight species are presented.

A study of the click beetles (Coleoptera: Elateridae) of northwestern Iran with three new species Reitterelater prosternalis sp. n., Melanotus borumandi sp. n. and M. kurdestanicus sp. n.

More than 800 specimens collected during 2015-2018 are studied from northwestern Iran. Thirty four species belonging to five subfamilies and 21 genera are listed. Reitterelater prosternalis sp. n., Melanotus borumandi sp. n. and M. kurdestanicus sp. n. are described. The genus Reitterelater and the species Pristilophus melancholicus (Fabricius) are recorded for the first time from Iran. Distributional map and climate data are presented for each species.

Three new species, Elathous zagrosensis sp. n., Zorochros dilatatus sp. n., and Dicronychus iranicus sp. n., and noteworthy records of click beetles from western Iran (Coleoptera: Elateridae).

Thirty-two species of Elateridae are listed from the central region of the Zagros Mountains in western Iran. Three new species, Elathous zagrosensis sp. n., Zorochros dilatatus sp. n., and Dicronychus iranicus sp. n. are described. Cardiophorus bellus Platia Gudenzi, is recorded for the first time from Iran. Distribution maps and climate data are presented for all species.

Phylogenetic study of the genus Sternolophus Solier (Coleoptera, Hydrophilidae) based on adult morphology.

The phylogeny of the hydrophilid genus Sternolophus Solier, 1834 was examined in this study using 60 morphological adult characters, eight of them continuous and 52 discrete. The cladistic analysis resulted in a single most parsimonious tree with two major subclades corresponding, respectively, to species previously assigned to the subgenera Sternolophus s. str. Solier and Neosternolophus Zaitzev, although they are not re-instated. The species groups S. angolensis (Erichson, 1843) and S. solieri Castelnau, 1840 are recovered as monophyletic. The biogeography and diversification of the species of Sternolophus are briefly discussed.