Oenosandra boisduvalii
In 3 days ~10% in a week ~30%
Oenosandra is a monotypic moth genus in the family Oenosandridae. Its only species, Oenosandra boisduvalii, or Boisduval's autumn moth, is found in the southern half of Australia, including Tasmania. Both the genus and species were first described by Edward Newman in 1856.
The wingspan is about 50 mm. The larvae feed on Eucalyptus species. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kosciuszko National Park | 🇦🇺 Australia | |
| 2 | Great Otway National Park | 🇦🇺 Australia | |
| 3 | Grampians National Park | 🇦🇺 Australia |
Rare
Under 5% of wildlife watchers report a Boisduval's Autumn Moth sighting in Perth on a given day, based on 9 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.
May and June
In those months about 10% of wildlife watchers report a Boisduval's Autumn Moth in Perth on a given day, against under 5% in July to April, the lowest months. Those are among Perth's wettest months, with about 100 mm of rain a month against 10 mm in December.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Boisduval's Autumn Moth sightings with a recorded time, and about half of them come between 6 pm and 6 am: it is seen both by day and at night.
Yes
Of the 2 cities where we can rate Boisduval's Autumn Moth sightings, Perth has the highest daily chance: under 5%. Next come Melbourne (Australia, under 5%).
Same order: Lepidoptera
The closest relatives of the Boisduval's Autumn Moth that you can see in Perth (order Lepidoptera, Butterflies and Moths) are Black-And-White Tiger Moth (about 20%), Australian Painted Lady (about 20%) and Apple Looper (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Boisduval's Autumn Moth is recorded against all the insects logged in Perth (9 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.
