Leuconycta diphteroides
In 3 days ~10% in a week ~30%
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 |
Rare
Under 5% of wildlife watchers report a Green Leuconycta Moth sighting in Great Smoky Mountains National Park on a given day, based on 10 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 513th most-seen of the 822 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
May and July
In those months about 10% of wildlife watchers report a Green Leuconycta Moth in Great Smoky Mountains National Park on a given day, against under 5% in June and August–April, 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.
3rd of 3
Of the 3 parks where we can rate Green Leuconycta Moth sightings, Great Smoky Mountains National Park ranks 3rd at under 5%. The best odds are in Acadia National Park (United States, about 10%) and Shenandoah National Park (United States, about 10%).
GBIF citizen-science records
It is estimated from how often the Green Leuconycta Moth is recorded against all the insects logged in Great Smoky Mountains National Park (10 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.
