WAmphizoa insolens
WAspidytes
WAulonogyrus
WBrychius
WBrychius elevatus
WCanthydrus
WCoptoclavidae
WDineutus
WDineutus assimilis
WDineutus carolinus
WDineutus ciliatus
WDineutus discolor
WDineutus emarginatus
WDineutus hornii
WDineutus loriae
WDineutus nigrior
WDineutus productus
WDineutus sublineatus
WGyrinus marinus
WGyrinus minutus
WGyrinus substriatus
WGyrinus woodruffi
WHaliplus fasciatus
WHaliplus fulvus
WHaliplus mucronatus
WHaliplus ruficollis
WHaliplus triopsis
WHaliplus variegatus
WHydrocanthus
WHydrocanthus atripennis
WHydrocanthus oblongus
WHygrobia hermanni
WNeohydrocoptus
WNoteridae
WNoterus
WNoterus clavicornis
WNoterus crassicornis
WNotomicrus
WPeltodytes
WPeltodytes callosus
WPeltodytes dietrichi
WSpanglerogyrus
WSuphis
WSuphis inflatus
WSuphisellus bicolor
WSystolosoma
WSystolosoma breve
WTrachypachus
WTrachypachus gibbsii
WTrachypachus slevini