Zerene cesonia
In 3 days ~40% in a week ~70%
Zerene cesonia, the southern dogface, is a North and South American butterfly in the family Pieridae, subfamily Coliadinae (until recently the species was sometimes placed in the related genus Colias instead of Zerene). Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Big Bend National Park | 🇺🇸 United States | |
| 2 | Saguaro National Park | 🇺🇸 United States | |
| 3 | Bahía de Loreto National Park | 🇲🇽 Mexico | |
| 4 | Cabo Pulmo National Park | 🇲🇽 Mexico | |
| 5 | Reserva de la Biosfera Mariposa Monarca | 🇲🇽 Mexico | |
| 6 | Guadalupe Mountains National Park | 🇺🇸 United States | |
| 7 | Cumbres de Monterrey National Park | 🇲🇽 Mexico | |
| 8 | Point Pelee National Park | 🇨🇦 Canada | |
| 9 | Padre Island National Seashore | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | La Paz | 🇧🇴 Bolivia | |
| 2 | Cochabamba | 🇧🇴 Bolivia | |
| 3 | San Luis Potosí | 🇲🇽 México | |
| 4 | San Antonio | 🇺🇸 United States | |
| 5 | Toluca | 🇲🇽 México | |
| 6 | Monterrey | 🇲🇽 México | |
| 7 | Austin | 🇺🇸 United States | |
| 8 | Guadalajara | 🇲🇽 México | |
| 9 | Puebla | 🇲🇽 México | |
| 10 | Mexico City | 🇲🇽 México |
Possible
About 20% of wildlife watchers report a Southern Dogface sighting in Reserva de la Biosfera Mariposa Monarca on a given day, based on 6 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 12th most-seen of the 21 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
May
In that month about 40% of wildlife watchers report a Southern Dogface in Reserva de la Biosfera Mariposa Monarca on a given day, against under 5% in March–April, June–August, 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 Southern Dogface sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 9 parks where we can rate Southern Dogface sightings, Reserva de la Biosfera Mariposa Monarca ranks 5th at about 20%, level with the leaders once rounded. The best odds are in Big Bend National Park (United States, about 20%), Saguaro National Park (United States, about 20%) and Bahía de Loreto National Park (Mexico, about 20%).
Same family: Pieridae
The closest relatives of the Southern Dogface that you can see in Reserva de la Biosfera Mariposa Monarca (family Pieridae, Whites, Yellows, and Sulphurs) are Pure-Banded Dartwhite (about 40%) and Mexican Dartwhite (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Southern Dogface is recorded against all the insects logged in Reserva de la Biosfera Mariposa Monarca (6 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.
