Pyrisitia proterpia
In 3 days ~20% in a week ~40%
Eurema proterpia, the tailed orange, is a North and South American butterfly in the family Pieridae. The upperside of the wings is orange with a variable amount of black along the forewing costa. The wing veins are lightly marked with black in summer individuals, and winter individuals have no black veins. Males reflect UV light on their upper sides, and some females can be white. The underside of the wings varies depending on the season. Summer individuals are yellow orange with the hindwing slightly pointed. Winter individuals are brown with darker brown markings with the hindwing being much more pointed. The wingspan measures 1+1⁄4 to 1+3⁄4 inches (32–44 mm).
The only similar species in the tailed orange's range is the sleepy orange (Eurema nicippe). The sleepy orange has a black forewing cell spot on the upperside, the upperside of the hindwing has a black marginal border, and the hindwing is not pointed.
The tailed orange lives in a variety of open habitats such as open woodlands, deserts and subtropical habitats. This species may be found from mid-July to early January in Arizona, from August to November in Texas... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cañón del Sumidero National Park | 🇲🇽 Mexico | |
| 2 | Cumbres de Monterrey National Park | 🇲🇽 Mexico | |
| 3 | Saguaro National Park | 🇺🇸 United States | |
| 4 | Big Bend National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Guadalajara | 🇲🇽 México | |
| 2 | San Luis Potosí | 🇲🇽 México | |
| 3 | Monterrey | 🇲🇽 México | |
| 4 | Mexico City | 🇲🇽 México |
With luck
About 10% of wildlife watchers report a Tailed Orange sighting in San Luis Potosí on a given day, based on 8 verified sightings from GBIF citizen-science data. It is the 53rd most-seen of the 91 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–September and November–December
In those months about 10% of wildlife watchers report a Tailed Orange in San Luis Potosí on a given day, against under 5% in January–May and October, the lowest months. Those are among San Luis Potosí's wettest months, with about 65 mm of rain a month against 5 mm in April.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Tailed Orange sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 4 cities where we can rate Tailed Orange sightings, San Luis Potosí ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Guadalajara (México, about 10%).
Same family: Pieridae
The closest relatives of the Tailed Orange that you can see in San Luis Potosí (family Pieridae, Whites, Yellows, and Sulphurs) are Southern Dogface (about 10%), Checkered White (about 10%) and Cloudless Sulphur (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Tailed Orange is recorded against all the insects logged in San Luis Potosí (8 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.
