holarctic; in NA, more diverse in the east (only one Nearctic species does not occur there); just 12 spp. in w.NA(4); numerous spp. in Eurasia
Food
Host plants(2): Donacia s.str.: waterlilies Brasenia, Nuphar, Nymphaea; Donacia (Donaciomima): Nymphaea and a number of other plants; Donacia (Arundinarius): Phragmites