Zerene cesonia
In 3 days ~50% in a week ~80%
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 Saguaro National Park on a given day, based on 199 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 13th most-seen of the 354 insects we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
February and September–December
In those months about 30% of wildlife watchers report a Southern Dogface in Saguaro National Park on a given day, against about 10% in April–May and July–August, 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, Saguaro National Park ranks 2nd at about 20%, level with the leaders once rounded. The best odds are in Big Bend National Park (United States, about 20%).
Same family: Pieridae
The closest relatives of the Southern Dogface that you can see in Saguaro National Park (family Pieridae, Whites, Yellows, and Sulphurs) are Dainty Sulphur (about 30%), Sleepy Orange (about 20%) and Checkered White (about 20%), 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 Saguaro National Park (199 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.
