Green flower scarab (Diphucephala colaspidoides)
For a short time in Spring these can appear in vast numbers to make the most of Leptospermum flowers.
These scarabs are about 12mm long.
The underside is creamy pale and heavily ribbed. The legs often take on other colours also including dark blue to red.

Diphucephala colaspidoides is a small, highly metallic, blue-green scarab beetle found in south-eastern Australia. It is occasionally very prolific and in Spring or early Summer can swarm to cover flowering bushes in vast numbers.
Similar species: Beetles
By Mark Ridgway
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Uploaded Mar 26, 2016. Captured Oct 31, 2012 03:43 in Stonemasons Track, Lysterfield South VIC 3156, Australia.