Aggiornamenti alla conoscenza della coleotterofauna acquatica dell'Arcipelago Toscano (Coleoptera)

This paper is an update of a previous contribution on the aquatic beetles of the Tuscan Archipelago (ROCCHI et al., 2014). The list includes 101 taxa (species and subspecies): 3 Gyrinidae, 3 Haliplidae, 1 Noteridae, 32 Dytiscidae, 4 Helophoridae, 1 Georissidae, 2 Hydrochidae, 32 Hydrophilidae, 19 Hydraenidae, 2 Elmidae, 1 Dryopidae, 1 Heteroceridae. The family Georissidae is recorded for the first time from the Tuscan Archipelago; 1 species from Tuscany, 8 from the Tuscan Archipelago, 2 from Capraia Island, 10 from Elba Island, 1 from Giglio Island, 5 from Montecristo Island, 1 from Cerboli Islet, and 1 from Palmaiola Islet are first records for these areas; the opaque form of the female Bidessus saucius (Desbrochers des Loges, 1871) is recorded for the first time from Italy (Montecristo Island and Sardinia).