The titan stick insect (Acrophylla titan) is the longest stick insect found in Australia. It is endemic to south-east Queensland and New South Wales. Titan stick insects are pale brown-grey in colour and can grow up to 30cm in length. The females can be easily identified as being larger than the males. Males are able to fly but females are not.
The females then flick their eggs to the ground. The eggs look like those of the children's stick insect, but they are black-grey with a small white growth. Ants pick them up and eat the growth, and leave the egg in the refinery where they hatch.