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 Monterrey on a given day, based on 47 verified sightings from GBIF citizen-science data. It is the 70th most-seen of the 413 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.
December
In that month about 20% of wildlife watchers report a Tailed Orange in Monterrey on a given day, against under 5% in March to May, the lowest months. That is one of Monterrey's driest months, with about 20 mm of rain against 200 mm in September.
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, Monterrey ranks 3rd at about 10%, level with the leaders once rounded. The best odds are in Guadalajara (México, about 10%) and San Luis Potosí (México, about 10%).
GBIF citizen-science records
It is estimated from how often the Tailed Orange is recorded against all the insects logged in Monterrey (47 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.
