Pyrisitia nise
In 3 days ~20% 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 Cumbres de Monterrey National Park on a given day, based on 52 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 72nd most-seen of the 431 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 50%, if each day is a fresh chance.
October
In that month about 20% of wildlife watchers report a Mimosa Yellow in Cumbres de Monterrey National Park on a given day, against under 5% in February–March and November, the lowest months.
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.
4th of 5
Of the 5 parks where we can rate Mimosa Yellow sightings, Cumbres de Monterrey National Park ranks 4th at about 10%. The best odds are in Bahía de Loreto National Park (Mexico, about 20%), Ría Lagartos Biosphere Reserve (Mexico, about 10%) and Calakmul Biosphere Reserve (Mexico, about 10%).
GBIF citizen-science records
It is estimated from how often the Mimosa Yellow is recorded against all the insects logged in Cumbres de Monterrey National Park (52 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.
