Spaelotis clandestina
In 3 days ~10% in a week ~30%
The clandestine dart or w-marked cutworm (Spaelotis clandestina) is a moth of the family Noctuidae. It is found from coast to coast across Canada to southern Alaska, and in the eastern United States from Maine to western North Carolina, west to northern Ohio to North Dakota, South Dakota, Nebraska, and down the Rocky Mountains from Montana to southern Arizona.
The wingspan is about 38 mm. Adults are on wing from May to October. The larvae are a pest on a variety of trees, shrubs, and herbaceous plants, including Vaccinium, Acer, Pinus, Fabaceae, Brassica oleracea, Zea mays, Malus and Fragaria. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Edmonton | 🇨🇦 Canada |
Rare
Under 5% of wildlife watchers report a Clandestine Dart sighting in Edmonton on a given day, based on 20 verified sightings from GBIF citizen-science data. It is the 129th most-seen of the 390 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.
June to September
In those months about 10% of wildlife watchers report a Clandestine Dart in Edmonton on a given day, against under 5% in October to May, the lowest months. Those are among Edmonton's wettest months, with about 70 mm of rain a month against 20 mm in February.
Only Edmonton, in our data
Edmonton is the only city on Wallace's Line with enough records to rate Clandestine Dart sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Noctuidae
The closest relatives of the Clandestine Dart that you can see in Edmonton (family Noctuidae, Cutworm Moths and Allies) are American Copper Underwing (about 10%), Alfalfa Looper (about 10%) and Bicolored Sallow (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Clandestine Dart is recorded against all the insects logged in Edmonton (20 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.
