Castor Semi-Looper

No - the caterpillar of that geometrid has been described as: "These Caterpillars camouflage themselves with buds and flowers of the the plant on which they are feeding. They are actually pinkish brown with a dark dorsal line, but have flanges along the back to which their disguises are attached." I think I have found something close to your caterpillar: Achaea janata Follow this link: http://lepidoptera.butterflyhouse.com.au/cato/janata.html sy Ken

Thanks!

Sphinx moth larvae have only a single horn along the longitudinal midline whereas Geometrid larvae have 2 smaller, lateral horns. Cheers Ken

Some type of sphinx moth caterpillar? It has what looks like a horn on its posterior.

A looper caterpillar of the family Geometridae