Achyra affinitalis
In 3 days ~20% in a week ~30%
Achyra affinitalis, the cotton web spinner, is a moth of the family Crambidae. It was first described by Julius Lederer in 1863. This species is found in Australia and New Zealand. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Hattah-Kulkyne National Park | 🇦🇺 Australia | |
| 2 | Blue Mountains National Park | 🇦🇺 Australia | |
| 3 | Great Otway National Park | 🇦🇺 Australia |
With luck
About 10% of wildlife watchers report a Cotton Web Spinner sighting in Perth on a given day, based on 21 verified sightings from GBIF citizen-science data. It is the 115th 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 30%, if each day is a fresh chance.
May
In that month about 20% of wildlife watchers report a Cotton Web Spinner in Perth on a given day, against under 5% in June to March, the lowest months. That is one of Perth's wettest months, with about 85 mm of rain against 10 mm in December.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Cotton Web Spinner sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
Yes
Of the 5 cities where we can rate Cotton Web Spinner sightings, Perth has the highest daily chance: about 10%. Next come Brisbane (Australia, about 10%) and Melbourne (Australia, about 10%).
Same family: Crambidae
The closest relatives of the Cotton Web Spinner that you can see in Perth (family Crambidae, Crambid Snout Moths) are Hawaiian Beet Webworm Moth (about 10%), Cabbage Centre Grub (about 10%) and Grass Webworm Moth (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Cotton Web Spinner is recorded against all the insects logged in Perth (21 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.
