Comparison of Australian plague locust and Oedaleus australis nymphs
Australian Plague Locust - Chortoicetes terminifera
- thorax of Oedaleus without a complete 'X' mark as seen on plague locust
- bands on rear femur of Oedaleus usually fade out in later instars but get stronger in plague locust
- Oedaleus has a prominent dark stripe from the antenna, across the eye, to the back of the head at a 45 degree angle
Oedaleus nymphs may occur in high numbers in some years but they rarely form dense bands as seen in the Australian plague locust.