WAsellus aquaticus
WAstacus astacus
WAstacus leptodactylus
WAustropotamobius pallipes
WAustropotamobius torrentium
WBythotrephes longimanusWCercopagis pengoi
WChirocephalus croaticus
WChirocephalus diaphanus
WDaphnia
WDaphnia longispina
WDaphnia magna
WGammarus pulex
WGammarus roeseli
WHemimysis anomala
WLepidurus arcticus
WMaltese freshwater crab
WMysis relicta
WPotamon fluviatile
WPotamon ibericum
WPotamon potamios
WSaduria entomon
WTanymastix stagnalis