A review of the Leach (Coleoptera, Hydrophilidae, Sphaeridiinae) of the Greater Antilles.

The representatives of the genus Leach occurring in the Greater Antilles are reviewed. Ten species are recorded, of which five are described here as new: (Dominican Republic), (Dominican Republic), (Dominican Republic), (Jamaica) and (Dominican Republic). Diagnoses and detailed distributional data are also provided for Horn, 1890 (distributed in southeastern United States of America and Cayman Islands), Chevrolat, 1863 (endemic to the Antilles) (Say, 1825) (widely distributed in the New World incl. Greater Antilles), (Linnaeus, 1761) (an adventive species of Paleartic origin) and (Marshall, 1802) (an adventive species probably of Oriental origin). form a group of closely related species only distinguishable by male genitalia and DNA sequences. A key to the Great Antillean is provided and important diagnostic characters are illustrated. The larvae of and were associated with adults using COI barcode sequences, illustrated and diagnosed. Full occurrence data, additional images and COI barcode sequences were submitted to open access on-line depositories in an effort to provide access to complete data.