New North American records of water mites (Acari: Unionicolidae:Unionicola: unionicolaandpentatax)

Abstract
Range extensions and new host records are reported for four species of Unionicola in North America. U. crassipes laurentiana Crowell and Davids, U. furcula (Lundblad) and U. gracilipalpis tenuis (Lundblad) are reported from sponges in Louisiana. U. aculeata (Koenike) is reported from mussels in Mexico.