In Australia the family is represented only by the genus Pelecorhynchus. These flies were originally placed in Tabanidae, and are closely related to them. There are 31 described Australian species.
Adults have been taken on Leptospermum flowers, or hovering in the air, in the mountains during the summer; a few species appear in coastal districts in the spring. Larvae have been collected in the damp margins of swampy areas, where they feed on earthworms and possibly other soft-bodied animals (Mackerras & Fuller 1942). They move to drier levels to pupate.