Vernia verna
In 3 days ~10% in a week ~20%
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 |
Rare
Under 5% of wildlife watchers report a Little Glassywing sighting in Boston on a given day, based on 14 verified sightings from GBIF citizen-science data. It is the 668th most-seen of the 1200 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.
July
In that month about 10% of wildlife watchers report a Little Glassywing in Boston on a given day, against under 5% in August to June, 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.
4th of 7
Of the 7 cities where we can rate Little Glassywing sightings, Boston ranks 4th at under 5%. The best odds are in Baltimore (United States, about 10%), Washington (United States, under 5%) and Toronto (Canada, under 5%).
Same family: Hesperiidae
The closest relatives of the Little Glassywing that you can see in Boston (family Hesperiidae, Skippers) are Zabulon Skipper (about 20%), Peck's Skipper (about 10%) and Silver-Spotted Skipper (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 Boston (14 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.
