Pyrausta unifascialis
In 3 days ~20% in a week ~30%
Pyrausta unifascialis, the one-banded pyrausta, is a moth in the family Crambidae. It was described by Alpheus Spring Packard in 1873. It is found in North America, where it has been recorded from Quebec west to British Columbia, south to Arizona and California. The habitat consists of forest openings, clearings and fields.
The wingspan is 16–24 mm. Adults are on wing from April to August. The larvae are polyphagous. They have been recorded feeding on Antennaria, Phaseolus, Eriogonum and Gayophytum species. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Yosemite National Park | 🇺🇸 United States |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a One-Banded Pyrausta sighting in Yosemite National Park on a given day, based on 11 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 124th most-seen of the 227 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.
June–July and September–October
In those months about 10% of wildlife watchers report a One-Banded Pyrausta in Yosemite National Park on a given day, against under 5% in August and November–May, the lowest months. Those are among Yosemite National Park's driest months, with about 30 mm of rain a month against 220 mm in January.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most One-Banded Pyrausta sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Only Yosemite National Park, in our data
Yosemite National Park is the only park on Wallace's Line with enough records to rate One-Banded Pyrausta sightings: about 10% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the One-Banded Pyrausta is recorded against all the insects logged in Yosemite National Park (11 verified sightings from 2019 to 2026), 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.
