Tropidoderus childrenii

These relatively large stick insects generally measure about 110 millimetres (4.3 in) in length and are native to Eastern Australia.

[1] Generally, the female insect is a medium green color and closely resembles leaves, thus making it difficult to spot in the foliage.

[2] The nymphs also have a long yellow strip that runs down the center of their bodies, which exactly matches the color of the leaf vein.

When disturbed, the Children's stick insect detaches its hind legs from the foliage and repeatedly strikes them together.

[2] It has been shown in mantid species that actions like these can startle predators such as lizards (deimatic behaviour), and it is believed this is the case in the stick insect as well.

The dark blue spot can be seen on the underside of the wings. Most likely used to startle potential predators.