The Dobsonfly..

…is closely related to the lacewings, and often comes to the light when mothing near streams. Two came to the light recently when mothing beside the bone dry Gladstone Creek. The adults skim over the surface of the water at dusk, and the water dwelling larvae are predators, feeding on small aquatic invertebrates, but are themselves eagerly consumed by fish. The adults do not feed, living just to mate and produce the next generation, a chancy process in a foothill creek like the Gladstone that can, as now, dry out. An impressive insect species, and very photogenic.

Click to enlarge.

Reference and further reading, Australian Insects by Bert Brunet.