Gastrimargus musicus
In 3 days ~20% in a week ~30%
Gastrimargus musicus, the yellow-winged locust or yellow-winged grasshopper, is a common grasshopper in Australia. It only displays its yellow back wings in flight, when it also emits a loud clicking or crackling sound. When swarming, the adults become dark brown.
They are sometimes confused with the Australian plague locust (Chortoicetes terminifera), though the yellow winged locust is "stouter and larger". In north Australian savannas it remains a solitary species. Adult females range from 35 to 50 mm, while males are smaller ranging from 25 to 35 mm. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Great Otway National Park | 🇦🇺 Australia | |
| 2 | Blue Mountains National Park | 🇦🇺 Australia |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Melbourne | 🇦🇺 Australia |
With luck
About 10% of wildlife watchers report an Australian Yellow-Winged Locust sighting in Blue Mountains National Park on a given day, based on 13 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 359th most-seen of the 789 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
January to March
In those months about 10% of wildlife watchers report an Australian Yellow-Winged Locust in Blue Mountains National Park on a given day, against under 5% in April to December, the lowest months. Those are among Blue Mountains National Park's wettest months, with about 140 mm of rain a month against 40 mm in May.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Australian Yellow-Winged Locust sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 2 parks where we can rate Australian Yellow-Winged Locust sightings, Blue Mountains National Park ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Great Otway National Park (Australia, about 10%).
Same family: Acrididae
The closest relatives of the Australian Yellow-Winged Locust that you can see in Blue Mountains National Park (family Acrididae, Short-horned Grasshoppers) are Giant Green Slantface (about 10%), Golden Bandwing (about 10%) and Wingless Grasshopper (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Australian Yellow-Winged Locust is recorded against all the insects logged in Blue Mountains National Park (13 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
