Ellipsidion australe
In 3 days ~10% in a week ~30%
Ellipsidion australe, or the eastern ellipsidion, or bush cockroach, is a harmless species of cockroach native to Australia and found in New South Wales, the Northern Territory, Queensland, and Victoria. The species was first described in 1863 as Thyrsocera australis by Henri de Saussure. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Blue Mountains National Park | 🇦🇺 Australia |
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report an Austral Ellipsidion sighting in Perth on a given day, based on 10 verified sightings from GBIF citizen-science data. It is the 175th most-seen of the 275 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
July–August and October
In those months about 10% of wildlife watchers report an Austral Ellipsidion in Perth on a given day, against under 5% in September and November–June, the lowest months. Those are among Perth's wettest months, with about 90 mm of rain a month against 10 mm in December.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Austral Ellipsidion sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
4th of 4
Of the 4 cities where we can rate Austral Ellipsidion sightings, Perth ranks 4th at under 5%. The best odds are in Melbourne (Australia, about 10%), Sydney (Australia, about 10%) and Brisbane (Australia, about 10%).
GBIF citizen-science records
It is estimated from how often the Austral Ellipsidion is recorded against all the insects logged in Perth (10 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.
