WAcanthomeridion
WAlexiidae
WArchidesmus
WCarpopenaeus
WDrepanopterus
WHomalonychus
WHuttonia
WLatzelia
WMacrothele
WNipponopsalididae
WOgoveidae
WOtilioleptidae
WPalaeosoma
WPeriegops
WPorrhothele
WSabaconidae
WSinocallipus
WSiphoniulus
WSuperstitionia
WSuperstitionia
WTrogloraptor
WTroglosironidae
WTuckerella
WUrochordeuma
WXyloiulus