Urbanus procne
In 3 days ~30% in a week ~50%
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 Monterrey on a given day, based on 81 verified sightings from GBIF citizen-science data. It is the 36th most-seen of the 413 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
July and October–November
In those months about 20% of wildlife watchers report a Brown Longtail in Monterrey on a given day, against under 5% in April, the lowest month.
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 4 cities where we can rate Brown Longtail sightings, Monterrey has the highest daily chance: about 10%. Next come Rio de Janeiro (Brazil, about 10%) and Guadalajara (México, under 5%).
GBIF citizen-science records
It is estimated from how often the Brown Longtail is recorded against all the insects logged in Monterrey (81 verified sightings), 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.
