Temognatha grandis is a species of beetle belonging to the family Buprestidae.
Temognatha grandis can reach a length of about .[1] The body colour is black, with a yellow border on each side. Head and legs are black. Elytra are punctato-striate. These beetles are florivore and feed on the flowers of various trees and shrubs (especially Angophora hispida and Leptospermum species).[1] [2] Larvae are wood-borers of Eucalyptus gracilis, Eucalyptus oleosa, Eucalyptus uncinata and Eucalyptus foecunda.
This species is present in New South Wales.[3] These beetles can be found in drainage basins and coastal and oceanic zones.[4]