Urbanus procne
In 3 days ~20% in a week ~40%
Spicauda procne, the brown longtail, is a species of butterfly in the family Hesperiidae. It is found from Argentina, north through Central America and Mexico to southern Texas. Rare strays can be found up to southern New Mexico, southern Arizona and southern California.
The wingspan is 37–48 mm. There are three generations per year in southern Texas. The larvae feed on various grasses, including Cynodon dactylon and Sorghum halepense. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cumbres de Monterrey National Park | 🇲🇽 Mexico | |
| 2 | Soberanía National Park | 🇵🇦 Panama |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Monterrey | 🇲🇽 México | |
| 2 | Rio de Janeiro | 🇧🇷 Brazil | |
| 3 | Guadalajara | 🇲🇽 México | |
| 4 | São Paulo | 🇧🇷 Brazil |
With luck
About 10% of wildlife watchers report a Brown Longtail sighting in Cumbres de Monterrey National Park on a given day, based on 21 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 145th most-seen of the 431 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.
July–August and October–November
In those months about 10% of wildlife watchers report a Brown Longtail in Cumbres de Monterrey National Park on a given day, against under 5% in September and December–June, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Brown Longtail 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 Brown Longtail sightings, Cumbres de Monterrey National Park has the highest daily chance: about 10%. Next come Soberanía National Park (Panama, about 10%).
Same genus: Urbanus
The closest relatives of the Brown Longtail that you can see in Cumbres de Monterrey National Park (genus Urbanus) are Long-Tailed Skipper (about 10%), Dorantes Longtail (about 10%) and White-Tailed Longtail (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Brown Longtail is recorded against all the insects logged in Cumbres de Monterrey National Park (21 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.
