Catterpillar on Arum Lilly @ Highfields

This photo was taken while at Highfields, South-East Queensland on an Arum Lily Plant.

Arum lily is a robust, dark green, succulent herb, also known as Calla or White arum lily. It was
introduced to WA from South Africa as a garden plant and subsequently escaped to become established
as a weed. It is found in creeks, irrigation ditches and areas of summer-moist land in the higher rainfall
south west of Western Australia, often forming large dense clumps. Arum lily competes with valuable
perennial pasture plants on summer land.(Source:  http://www.agric.wa.gov.au/objtwr/imported_assets/content/pw/gard/buddies1010.pdf)