Ganyra josephina
In 3 days ~70% in a week >90%
Ganyra josephina, the giant white, is a butterfly in the family Pieridae. It is found from southern Texas through Mexico, the Caribbean and Central America to northern South America. The habitat consists of open, dry, subtropical forests. The wingspan is 73–96 mm (2.9–3.8 in). Adults are on wing from September to December in southern Texas. They feed on flower nectar from a variety of weeds and garden plants including Lantana, Eupatorium and Bougainvillea.
The larvae feed on older leaves of Capparidaceae species. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Ría Lagartos Biosphere Reserve | 🇲🇽 Mexico | |
| 2 | Calakmul Biosphere Reserve | 🇲🇽 Mexico |
Likely
About 40% of wildlife watchers report a Giant White sighting in Ría Lagartos Biosphere Reserve on a given day, based on 51 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 7th most-seen of the 112 insects we can rate there. Over three days the chance rises to about 70%, and over a week to over 90%, if each day is a fresh chance.
December to February
In those months about 50% of wildlife watchers report a Giant White in Ría Lagartos Biosphere Reserve on a given day, against under 5% in May and October, the lowest months. Those are among Ría Lagartos Biosphere Reserve's driest months, with about 35 mm of rain a month against 150 mm in June.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Giant White sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 2 parks where we can rate Giant White sightings, Ría Lagartos Biosphere Reserve has the highest daily chance: about 40%. Next come Calakmul Biosphere Reserve (Mexico, about 10%).
Same family: Pieridae
The closest relatives of the Giant White that you can see in Ría Lagartos Biosphere Reserve (family Pieridae, Whites, Yellows, and Sulphurs) are Great Southern White (about 20%), Large Orange Sulphur (about 10%) and Mimosa Yellow (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Giant White is recorded against all the insects logged in Ría Lagartos Biosphere Reserve (51 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.
