Temognatha grandis is a species of beetle belonging to the family Buprestidae.

Temognatha grandis can reach a length of about 55 millimetres (2.2 in).

[2] The body colour is black, with a yellow border on each side.

These beetles are florivore and feed on the flowers of various trees and shrubs (especially Angophora hispida and Leptospermum species).

[1][5] These beetles can be found in drainage basins and coastal and oceanic zones.