Urbanus procne
In 3 days ~20% in a week ~30%
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 Rio de Janeiro on a given day, based on 12 verified sightings from GBIF citizen-science data. It is the 66th most-seen of the 169 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
March–April, September and November–December
In those months about 10% of wildlife watchers report a Brown Longtail in Rio de Janeiro on a given day, against under 5% in January–February, May–August and October, 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.
Among the best
Of the 4 cities where we can rate Brown Longtail sightings, Rio de Janeiro ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Monterrey (México, about 10%).
GBIF citizen-science records
It is estimated from how often the Brown Longtail is recorded against all the insects logged in Rio de Janeiro (12 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.
