Nastra julia
In 3 days ~10% in a week ~20%
Nastra julia, the Julia's skipper, is a species of butterfly in the family Hesperiidae. It is found in North America from southern Texas to central Mexico. The wingspan is 24–29 mm. Adults are on wing year-round in southern Texas and from April to October in the rest of the range.
The larvae feed on Cynodon dactylon. Adults feed on flower nectar. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Guadalajara | 🇲🇽 México | |
| 2 | San Antonio | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Julia's Skipper sighting in San Antonio on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 549th most-seen of the 697 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Julia's Skipper in San Antonio on a given day, so our monthly data shows no clear season.
Among the best
Of the 2 cities where we can rate Julia's Skipper sightings, San Antonio ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Guadalajara (México, under 5%).
Same family: Hesperiidae
The closest relatives of the Julia's Skipper that you can see in San Antonio (family Hesperiidae, Skippers) are Fiery Skipper (about 20%), Blurry-Striped Longtail (about 20%) and Clouded Skipper (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Julia's Skipper is recorded against all the insects logged in San Antonio (7 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.
