Covers the following families: Helophoridae, Epimetopidae, Georissidae, Hydrochidae, Spercheidae, Hydrophilidae, Sphaeritidae, Syntelidae, Histeridae, Hydraenidae, Ptiliidae, Agyrtidae, Leiodidae, Scysmaenidae, Silphidae, Staphylinidae. The area covered includes also the Arabian Peninsula, Himalayas and China. The distributional data of species and subspecies is given per country. Detailed distributional information for strict endemics is given. Introduced species are indicated.