Vernia verna
In 3 days ~20% in a week ~40%
Vernia verna, the little glassywing, is a species of butterfly of the family Hesperiidae. It is found in the eastern United States and southeastern Canada, from central New England west to central Nebraska, south to northern Florida, the Gulf Coast and southern Texas.
The wingspan is 27–39 mm. Adults prefer to feed on the nectar of white, pink and purple flowers, including Apocynum, Prunella, Mentha × piperita, Eutrochium and Asclepias. The larvae feed on Tridens flavus. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Shenandoah National Park | 🇺🇸 United States |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Baltimore | 🇺🇸 United States | |
| 2 | Washington | 🇺🇸 United States | |
| 3 | Toronto | 🇨🇦 Canada | |
| 4 | Boston | 🇺🇸 United States | |
| 5 | Philadelphia | 🇺🇸 United States | |
| 6 | New York City | 🇺🇸 United States | |
| 7 | Chicago | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Little Glassywing sighting in Shenandoah National Park on a given day, based on 16 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 234th most-seen of the 723 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.
May to August
In those months about 10% of wildlife watchers report a Little Glassywing in Shenandoah National Park on a given day, against under 5% in September to April, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Little Glassywing sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Only Shenandoah National Park, in our data
Shenandoah National Park is the only park on Wallace's Line with enough records to rate Little Glassywing sightings: about 10% of wildlife watchers there report one on a given day.
Same family: Hesperiidae
The closest relatives of the Little Glassywing that you can see in Shenandoah National Park (family Hesperiidae, Skippers) are Silver-Spotted Skipper (about 40%), Zabulon Skipper (about 20%) and Juvenal's Duskywing (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Little Glassywing is recorded against all the insects logged in Shenandoah National Park (16 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.
