Goniaea australasiae
In 3 days ~20% in a week ~40%
Goniaea australasiae is a species of grasshopper in the family Acrididae. Experiments have been carried out with G. australasiae to study the time of genetic recombination in relation to the sequence of stages in meiosis, the relationship of chiasmata to crossing over, and the mechanism of recombination. Combined cytological and autoradiographic analyses of meiosis showed that crossing over is achieved by breakage and exchange of segments of nonsister, homologous chromatids, and each such exchange event results in the formation of a cytologically visible chiasma. The meiotic stage at which this form of recombination takes place has been identified as "early pachytene," and it is well removed from premeiotic chromosome duplication. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Flinders Ranges National Park | 🇦🇺 Australia | |
| 2 | Freycinet National Park | 🇦🇺 Australia | |
| 3 | Wilsons Promontory National Park | 🇦🇺 Australia | |
| 4 | Grampians National Park | 🇦🇺 Australia | |
| 5 | Great Otway National Park | 🇦🇺 Australia | |
| 6 | Royal National Park | 🇦🇺 Australia | |
| 7 | Blue Mountains National Park | 🇦🇺 Australia |
With luck
About 10% of wildlife watchers report a Common Gumleaf Grasshopper sighting in Perth on a given day, based on 35 verified sightings from GBIF citizen-science data. It is the 77th most-seen of the 275 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
February, April–May, July and September–December
In those months about 10% of wildlife watchers report a Common Gumleaf Grasshopper in Perth on a given day, against under 5% in January, March, June and August, the lowest months.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Common Gumleaf Grasshopper sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 4 cities where we can rate Common Gumleaf Grasshopper sightings, Perth has the highest daily chance: about 10%. Next come Brisbane (Australia, under 5%) and Melbourne (Australia, under 5%).
Same family: Acrididae
The closest relatives of the Common Gumleaf Grasshopper that you can see in Perth (family Acrididae, Short-horned Grasshoppers) are Giant Grasshopper (about 20%), Giant Green Slantface (about 10%) and Bark-Mimicking Grasshopper (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Common Gumleaf Grasshopper is recorded against all the insects logged in Perth (35 verified sightings), 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.
