Copestylum mexicanum
In 3 days ~10% in a week ~30%
Copestylum mexicanum, the Mexican cactus fly, is a species of syrphid fly in the family Syrphidae. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Saguaro National Park | 🇺🇸 United States | |
| 2 | Big Bend National Park | 🇺🇸 United States | |
| 3 | Everglades National Park | 🇺🇸 United States | |
| 4 | Cumbres de Monterrey National Park | 🇲🇽 Mexico |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | San Diego | 🇺🇸 United States | |
| 2 | Los Angeles | 🇺🇸 United States | |
| 3 | Sacramento | 🇺🇸 United States | |
| 4 | Mexico City | 🇲🇽 México | |
| 5 | Monterrey | 🇲🇽 México | |
| 6 | Mesa | 🇺🇸 United States | |
| 7 | San Antonio | 🇺🇸 United States | |
| 8 | Phoenix | 🇺🇸 United States | |
| 9 | Austin | 🇺🇸 United States | |
| 10 | San Francisco | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Mexican Cactus Fly sighting in Everglades National Park on a given day, based on 10 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 273rd most-seen of the 496 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
May and November–January
In those months about 10% of wildlife watchers report a Mexican Cactus Fly in Everglades National Park on a given day, against under 5% in February–April and June–October, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Mexican Cactus Fly sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 4 parks where we can rate Mexican Cactus Fly sightings, Everglades National Park ranks 3rd at about 10%, level with the leaders once rounded. The best odds are in Saguaro National Park (United States, about 10%) and Big Bend National Park (United States, about 10%).
Same family: Syrphidae
The closest relatives of the Mexican Cactus Fly that you can see in Everglades National Park (family Syrphidae, Hover Flies) are White-Faced Plushback (about 20%), Northern Plushback (about 10%) and Florida Calligrapher (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Mexican Cactus Fly is recorded against all the insects logged in Everglades National Park (10 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.
