Iridopsis ephyraria
In 3 days ~10% in a week ~20%
Iridopsis ephyraria, commonly known as the pale-winged gray, is a species of moth in the family Geometridae. The species was first described by Francis Walker in 1860. It is found in the United States and southern Canada east of the Rocky Mountains, from New Brunswick to Florida, west to Texas and north to Alberta.
The wingspan is 23–28 mm. Adults are on wing from June to September. The larvae feed on a wide range of woody plants Fraxinus, Abies balsamea, Betula, Prunus virginiana, Tsuga canadensis, Ulmus, Ribes uva-crispa, Acer and Salix species.
Pimpla pedalis is a parasitoid of I. ephyraria pupae. Wikipedia →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Pale-Winged Gray sighting in Austin on a given day, based on 18 verified sightings from GBIF citizen-science data. It is the 873rd most-seen of the 1624 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
May
In that month about 10% of wildlife watchers report a Pale-Winged Gray in Austin on a given day, against under 5% in June to April, the lowest months. That is one of Austin's wettest months, with about 110 mm of rain against 45 mm in February.
Yes
Of the 3 cities where we can rate Pale-Winged Gray sightings, Austin has the highest daily chance: under 5%. Next come Toronto (Canada, under 5%) and Montreal (Canada, under 5%).
GBIF citizen-science records
It is estimated from how often the Pale-Winged Gray is recorded against all the insects logged in Austin (18 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.
