Copestylum fornax
In 3 days ~20% in a week ~40%
Copestylum fornax 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 |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Phoenix | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Copestylum fornax sighting in Saguaro National Park on a given day, based on 18 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 128th most-seen of the 354 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
June and August–January
In those months about 10% of wildlife watchers report a Copestylum fornax in Saguaro National Park on a given day, against under 5% in February–May and July, the lowest months.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Copestylum fornax sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 2 parks where we can rate Copestylum fornax sightings, Saguaro National Park has the highest daily chance: about 10%. Next come Big Bend National Park (United States, under 5%).
Same genus: Copestylum
The closest relatives of the Copestylum fornax that you can see in Saguaro National Park (genus Copestylum, Bromeliad Flies) are Copestylum marginatum (about 10%), Isabelle's Bromeliad Fly (about 10%) and Copestylum apiciferum (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Copestylum fornax is recorded against all the insects logged in Saguaro National Park (18 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.
