Euclidia cuspidea
In 3 days ~30% in a week ~60%
Euclidia cuspidea, the toothed somberwing, is a moth of the family Erebidae. The species was first described by Jacob Hübner in 1818. It is found in North America from Quebec west to western Alberta, north to the Northwest Territories and south to the Gulf of Mexico.
The wingspan is 28–36 mm. Adults are on wing from May to June depending on the location. The larvae feed on various clovers and grasses. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Elk Island National Park | 🇨🇦 Canada |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Toothed Somberwing sighting in Elk Island National Park on a given day, based on 8 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 65th most-seen of the 112 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
May and June
In those months about 20% of wildlife watchers report a Toothed Somberwing in Elk Island National Park on a given day, against under 5% in July to April, the lowest months. Those are among Elk Island National Park's wettest months, with about 90 mm of rain a month against 20 mm in December.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Toothed Somberwing sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Only Elk Island National Park, in our data
Elk Island National Park is the only park on Wallace's Line with enough records to rate Toothed Somberwing sightings: about 10% of wildlife watchers there report one on a given day.
Same family: Erebidae
The closest relatives of the Toothed Somberwing that you can see in Elk Island National Park (family Erebidae, Underwing, Tiger, Tussock, and Allied Moths) are Virginia Ctenucha Moth (about 50%), Isabella Tiger Moth (about 40%) and Police Car Moth (about 40%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Toothed Somberwing is recorded against all the insects logged in Elk Island National Park (8 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.
