Anthocharis thoosa
In 3 days ~40% in a week ~70%
Anthocharis thoosa, the southwestern orangetip, is a butterfly which has a range mainly from the American Rocky Mountains down into Mexico. It is a member of the Anthocharis sara complex. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Zion National Park | 🇺🇸 United States | |
| 2 | Saguaro National Park | 🇺🇸 United States | |
| 3 | Grand Canyon National Park | 🇺🇸 United States |
Possible
About 20% of wildlife watchers report a Southwestern Orangetip sighting in Zion National Park on a given day, based on 28 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 22nd most-seen of the 114 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
February
In that month about 60% of wildlife watchers report a Southwestern Orangetip in Zion National Park on a given day, against under 5% in May to January, the lowest months. That is one of Zion National Park's wettest months, with about 55 mm of rain against almost none in June.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Southwestern Orangetip 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 3 parks where we can rate Southwestern Orangetip sightings, Zion National Park has the highest daily chance: about 20%. Next come Saguaro National Park (United States, about 10%) and Grand Canyon National Park (United States, about 10%).
Same family: Pieridae
The closest relatives of the Southwestern Orangetip that you can see in Zion National Park (family Pieridae, Whites, Yellows, and Sulphurs) are Checkered White (about 10%), Orange Sulphur (about 10%) and Dainty Sulphur (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Southwestern Orangetip is recorded against all the insects logged in Zion National Park (28 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.
