Hypena madefactalis
In 3 days ~10% in a week ~20%
Hypena madefactalis, the gray-edged hypena or gray-eyed bomolocha, is a moth of the family Erebidae. The species was first described by Achille Guenée in 1854. It is found from extreme southern Canada (Quebec) to Georgia and Texas.
The wingspan is 25–32 mm. The moth flies from April to August in the south and from May to August in the north. There are at least two generations per year. The larvae feed on walnut, mainly Juglans nigra and Juglans cinerea. Larvae have also been reared on shagbark hickory. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Shenandoah National Park | 🇺🇸 United States | |
| 2 | Point Pelee National Park | 🇨🇦 Canada |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Baltimore | 🇺🇸 United States | |
| 2 | Chicago | 🇺🇸 United States | |
| 3 | Washington | 🇺🇸 United States | |
| 4 | Toronto | 🇨🇦 Canada | |
| 5 | Boston | 🇺🇸 United States | |
| 6 | New York City | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Gray-Edged Snout sighting in Washington on a given day, based on 21 verified sightings from GBIF citizen-science data. It is the 827th most-seen of the 1807 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 Gray-Edged Snout in Washington on a given day, so our monthly data shows no clear season.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Gray-Edged Snout sightings with a recorded time, and about half of them come between 6 pm and 6 am: it is seen both by day and at night.
Among the best
Of the 6 cities where we can rate Gray-Edged Snout sightings, Washington ranks 3rd at under 5%, level with the leaders once rounded. The best odds are in Baltimore (United States, under 5%) and Chicago (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Gray-Edged Snout is recorded against all the insects logged in Washington (21 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.
