Urbanus procne
In 3 days ~10% in a week ~20%
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 |
Rare
Under 5% of wildlife watchers report a Brown Longtail sighting in São Paulo on a given day, based on 17 verified sightings from GBIF citizen-science data. It is the 362nd most-seen of the 832 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
February and April
In those months about 10% of wildlife watchers report a Brown Longtail in São Paulo on a given day, against under 5% in March and May–January, 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.
4th of 4
Of the 4 cities where we can rate Brown Longtail sightings, São Paulo ranks 4th at under 5%. The best odds are in Monterrey (México, about 10%), 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 São Paulo (17 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.
