Solitary bees that mainly nest in burrows in the ground. They use saliva to line their nests with cellulose-like membranes.
Composed of three Australian subfamilies.
Houston, T. F. 1981. A revision of the Australian hylaeine bees (Hymenoptera: Colletidae). II. Australian Journal of Zoology Supplementary Series 80: 1-128.
Houston, T. 2018. A guide to native bees of Australia, CSIRO Publishing, Australia.