The Leichhardt’s grasshopper is a Kakadu icon.
These colourful insects are named after the explorer Ludwig Leichhardt, who reported great numbers of them as he travelled through this area in 1845.
Where to see it
Seeing Leichhardt’s grasshoppers up close requires patience and persistence. They are visible during the tropical summer, although numbers fluctuate significantly each year.
Leichhardt’s grasshoppers are extremely picky about their food. In Kakadu they only eat one thing – the pityrodia bush. It is quite common for a grasshopper to spend its entire one-year lifespan on just a few bushes.
Leichhardt’s grasshoppers scare off potential predators with a chemical defence. When the insects feel threatened, they secrete a smelly brown substance that tastes awful to any animals looking for a snack.
These insects are a sign of the changing seasons in Kakadu. They come out in October every year to coincide with the build-up and first rains of the monsoon season.
Gundjeihmi speakers call the grasshoppers ‘alyurr’ and believe they are the children of the Namarrgon lightning man, a powerful creation ancestor. In the build-up to the tropical summer, the alyurr call out to their father, who answers with storms and lightning.
- Scientific name: Petasida ephippigera
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