Speyeria egleis
In 3 days ~20% in a week ~40%
Speyeria egleis, commonly known as the Great Basin fritillary or egleis fritillary, is a butterfly of the family Nymphalidae. It is found in the United States, where it has been recorded from North Dakota southwest through Oregon to California and south to Colorado. The habitat consists of mountain meadows, forest openings and exposed rocky ridges.
The wingspan is 45–60 mm. The wings are bright to dull orange brown with dark markings. Adults are on wing from late June to August. The larvae feed on the leaves of Viola species, including V. adunca, V. nuttallii, V. purpurea, and V. walteri. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sequoia and Kings Canyon National Parks | 🇺🇸 United States | |
| 2 | Yosemite National Park | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Great Basin Fritillary sighting in Sequoia and Kings Canyon National Parks on a given day, based on 8 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 95th most-seen of the 161 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
June to August
In those months about 10% of wildlife watchers report a Great Basin Fritillary in Sequoia and Kings Canyon National Parks on a given day, against under 5% in September to May, the lowest months. Those are among Sequoia and Kings Canyon National Parks's driest months, with about 25 mm of rain a month against 190 mm in January.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Great Basin Fritillary sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 2 parks where we can rate Great Basin Fritillary sightings, Sequoia and Kings Canyon National Parks has the highest daily chance: about 10%. Next come Yosemite National Park (United States, about 10%).
Same genus: Speyeria
The closest relatives of the Great Basin Fritillary that you can see in Sequoia and Kings Canyon National Parks (genus Speyeria) are Mormon Fritillary (about 20%) and Hydaspe Fritillary (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Great Basin Fritillary is recorded against all the insects logged in Sequoia and Kings Canyon National Parks (8 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.
