Anteos maerula
In 3 days ~10% in a week ~30%
Anteos maerula, the angled sulphur or yellow angled-sulphur, is a butterfly of the family Pieridae. It is found from Peru to Mexico. Rarely, migrants can be found up to eastern Nebraska, south-eastern Arizona, south-western New Mexico, southern Texas, Mississippi and Florida.
The wingspan is 82–117 mm. The larvae feed on Cassia species, including Cassia emarginata. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cumbres de Monterrey National Park | 🇲🇽 Mexico |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | San Luis Potosí | 🇲🇽 México | |
| 2 | Mexico City | 🇲🇽 México | |
| 3 | Monterrey | 🇲🇽 México | |
| 4 | Guadalajara | 🇲🇽 México |
Rare
Under 5% of wildlife watchers report a Yellow Angled-Sulphur sighting in Cumbres de Monterrey National Park on a given day, based on 9 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 252nd most-seen of the 431 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
January–February, August–September and November
In those months about 10% of wildlife watchers report a Yellow Angled-Sulphur in Cumbres de Monterrey National Park on a given day, against under 5% in March–July, October and December, the lowest months.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Yellow Angled-Sulphur sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Cumbres de Monterrey National Park, in our data
Cumbres de Monterrey National Park is the only park on Wallace's Line with enough records to rate Yellow Angled-Sulphur sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Pieridae
The closest relatives of the Yellow Angled-Sulphur that you can see in Cumbres de Monterrey National Park (family Pieridae, Whites, Yellows, and Sulphurs) are Large Orange Sulphur (about 20%), Lyside Sulphur (about 10%) and Southern Dogface (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Yellow Angled-Sulphur is recorded against all the insects logged in Cumbres de Monterrey National Park (9 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.
