A Checklist of the bees of the genus Hylaeus Fabricius, 1793 (Hymenoptera: Apoidea: Colletidae) of Iran

A checklist of the bees of the genus Hylaeus Fabricius, 1793 of Iran, based on the literature data and also field surveys in northeastern Iran (North Khorasan and Khorasan-e Razavi provinces) is presented. The resulting checklist comprises nine subgenera and 63 species. Four species of the genus Hylaeus, including H. (Lambdopsis) rinki (Gorski, 1852), H. (Spatulariella) hyalinatus Smith, 1842, H. (Spatulariella) punctatus (Brullé, 1832) and H. (Prosopis) lionotus (Alfken, 1909), are newly recorded for the fauna of Iran. The later species is considered as ″ very rare″ , has only known in Kazakhstan. A re-description of the male of H. (Prosopis) lionotus together with the illustrations of morphological characters is given.