We have only seen this species once in Woodlands Historic Park- when we rescued it from a pond after a sudden downpour.
Classification
from Australian Faunal Directory
Order Diptera - Flies, 8955 named species in Australia at Nov. 2021
Suborder Brachycera - Flies having short or few-segmented Antennae ending in a style
Family Tabanidae - March Flies, 267 species in Australia
Genus Scaptia
Species Scaptia auriflua