Hydrometra stagnorum (Linnaeus, 1758)

Hydrometra stagnorum Terzani et al. 2012: 269 .

RECORDS. Tuscany: Ama torrent, 660 m, Pratovecchio (AR), 31.VIII.2008, GM leg., 1 M, 1 F brach, 1 IV, 1 III (CCFI); Arboretum “Carlo Siemoni”, Badia Prataglia, 810 m, Poppi (AR), 8.IX.2008, FC leg., 1 IV (CCFI); Asqua lake, 900 m, Poppi (AR), 24.VI.2004, GM vidit, 1 ex.; idem, 7.V.2008, GM leg., 1 F brach (CCFI); Asqua lake tributary, 930 m, Poppi (AR), 11.VIII.2011, FC leg., 1 M, 1 F brach (CCFI); Chiusi della Verna pond, 1030 m, near Sasso Cavallino, Chiusi della Verna (AR), 14.VII.2009, GM & GC leg., 1 F (CCFI); Eremo di Camaldoli lake, 1100 m, Poppi (AR), 12.VIII.2004, GM vidit, 1 ex.; Fiumicello torrent, 600 m, near Casalino, Pratovecchio (AR), 13.VII.2008, GM & GC leg., 2 F brach (CCFI); Metaleto lake, 900 m, Poppi (AR), 28.VII.2003, GM vidit, 1 ex.; idem, 8.VIII.2011, FC leg., 1 M brach (CCFI); Oia torrent, 525 m, Ponte Biforco, Stia (AR), 29.IX.2008, GM leg., 1 F brach (CCFI); Vignano lake, 600 m, Poppi (AR), 25.VI.2006, FC & GM leg., 1 F brach (CCFI); Vignano ponds, 600 m, Poppi (AR), 25.VI.2006, FC & GM leg., 1 M, 1 F brach (CCFI). Emilia-Romagna: Bidente di Pietrapazza torrent, 480 m, near Mulino delle Cortine, Bagno di Romagna (FC), 20.VI.2008, GM & ML leg., 1 F brach (CCFI); idem, 18.VIII.2008, FC leg., 1 M brach, 1 V, 1 III (CCFI); Bidente di Pietrapazza torrent, 620 m, Bagno di Romagna (FC), 16.VII.2004, GM vidit, 1 ex.; Valbonella lake, 712 m, Santa Sofia (FC), 10.V.2008, GM & FT leg., 1 M, 1 F brach (MZUF); Valbonella, botanical garden pool, 712 m, Santa Sofia (FC), 10.V.2008, GM & FT leg., 1 M, 2 F brach (MZUF); idem, 14.VIII.2008, GM leg., 1 M, 1 F brach (MZUF).

Remarks. A Turano-Europeo-Mediterranean species, present in all Italian regions (Alma et al. 2009; Cianferoni 2009). Although it is a very common species in lentic and lotic waters, the first record for the Park was published only very recently (Terzani et al. 2012). It was previously cited for this area as Hydrometra sp. (Mazza et al. 2008a).