Leuconycta diphteroides
In 3 days ~20% in a week ~40%
Leuconycta diphteroides, the green leuconycta moth or green owlet, is a moth of the family Noctuidae. The species was first described by Achille Guenée in 1852. It is found in North America from Nova Scotia to Florida, west to Texas and north to Saskatchewan.
The wingspan is 27–32 mm. Adults are on wing from May to September. The larvae feed on Solidago and Aster species. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Acadia National Park | 🇺🇸 United States | |
| 2 | Shenandoah National Park | 🇺🇸 United States | |
| 3 | Great Smoky Mountains National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Toronto | 🇨🇦 Canada | |
| 2 | Chicago | 🇺🇸 United States | |
| 3 | Montreal | 🇨🇦 Canada | |
| 4 | Boston | 🇺🇸 United States | |
| 5 | Washington | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Green Leuconycta Moth sighting in Shenandoah National Park on a given day, based on 13 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 284th 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.
August
In that month about 20% of wildlife watchers report a Green Leuconycta Moth in Shenandoah National Park on a given day, against under 5% in September to July, the lowest months.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Green Leuconycta Moth sightings with a recorded time, and about 7 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
Among the best
Of the 3 parks where we can rate Green Leuconycta Moth sightings, Shenandoah National Park ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Acadia National Park (United States, about 10%).
Same family: Noctuidae
The closest relatives of the Green Leuconycta Moth that you can see in Shenandoah National Park (family Noctuidae, Cutworm Moths and Allies) are Beautiful Wood-Nymph (about 20%), American Dagger (about 10%) and Eight-Spotted Forester Moth (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Green Leuconycta Moth is recorded against all the insects logged in Shenandoah National Park (13 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.
