Hylaeus nubilosusHylaeus nubilosus is a species of insect within the genus Hylaeus. It is commonly referred to as the cloudy masked bee.DescriptionHylaeus nubilosus is a medium-sized masked bee with a conspicuous yellow thoracic badge in the middle of the scutellum and metanotum.RangeEndemic to the eastern States of Australia. It is also recorded from several suburban sites in the Perth region of southwestern Western Australia.HabitatHylaeus nubilosus prefers to nest in abandoned nests of mud-dauber wasps such as Sphecidae and potter wasps Eumeninae.