Pyrisitia nise
In 3 days ~30% in a week ~50%
Pyrisitia nise, the mimosa yellow, is a butterfly in the family Pieridae. It is found from Argentina north to the Texas Gulf Coast and throughout central and southern Florida, northward to the Tennessee Valley. It is an occasional stray to central Texas and south-eastern Arizona and rarely to southern California, southern Colorado and Kansas. The habitat consists of brushy woodland edges.
The wingspan is 29–51 mm (1.1–2.0 in). Both sexes are yellow. The upperside of the forewing has narrow black outer edges. Black margins of the hindwing are uncommon in males, but always absent in females. Adults are on wing from May to August in southern Florida, September to November in southern Texas and all year round in the tropics. Adults feed on flower nectar.
The larvae feed on Mimosa pudica. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bahía de Loreto National Park | 🇲🇽 Mexico | |
| 2 | Ría Lagartos Biosphere Reserve | 🇲🇽 Mexico | |
| 3 | Calakmul Biosphere Reserve | 🇲🇽 Mexico | |
| 4 | Cumbres de Monterrey National Park | 🇲🇽 Mexico | |
| 5 | Everglades National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Monterrey | 🇲🇽 México | |
| 2 | Rio de Janeiro | 🇧🇷 Brazil | |
| 3 | Mexico City | 🇲🇽 México | |
| 4 | Buenos Aires | 🇦🇷 Argentina |
With luck
About 10% of wildlife watchers report a Mimosa Yellow sighting in Calakmul Biosphere Reserve on a given day, based on 7 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 46th most-seen of the 75 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
June and July
In those months about 20% of wildlife watchers report a Mimosa Yellow in Calakmul Biosphere Reserve on a given day, against under 5% in February–May and August–December, the lowest months. Those are among Calakmul Biosphere Reserve's wettest months, with about 90 mm of rain a month against 15 mm in February.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Mimosa Yellow sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
3rd of 5
Of the 5 parks where we can rate Mimosa Yellow sightings, Calakmul Biosphere Reserve ranks 3rd at about 10%. The best odds are in Bahía de Loreto National Park (Mexico, about 20%) and Ría Lagartos Biosphere Reserve (Mexico, about 10%).
Same family: Pieridae
The closest relatives of the Mimosa Yellow that you can see in Calakmul Biosphere Reserve (family Pieridae, Whites, Yellows, and Sulphurs) are Florida White (about 10%), Lyside Sulphur (about 10%) and Giant White (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Mimosa Yellow is recorded against all the insects logged in Calakmul Biosphere Reserve (7 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.
