Gli Insetti di Firenze. La coleotterofauna acquatica (Coleoptera: Hydradephaga, Hydrophiloidea, Hydraenidae, Scirtidae, Elmidae, Dryopidae, Limnichidae, Heteroceridae)

In this paper a list of the water beetles known for the municipality of Florence is given; this list is divided into three periods: until 3.XI.1966, from 4.XI.1966 to 31.XII.1999, from 1.I.2000 to 30.VI.2020. Both data from literature and unpublished material are included. A chorological and faunal comparison over the considered period is carried out for the listed taxa.