Pediasia trisecta
In 3 days ~10% in a week ~20%
Pediasia trisecta, the large sod webworm or greater sod webworm, is a moth of the family Crambidae. It is found in the United States and southern Canada. The wingspan is 23–33 mm. Adults are on wing from May to October. Adults feed solely on dew.
The larvae feed on various Poaceae species. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Chicago | 🇺🇸 United States | |
| 2 | Montreal | 🇨🇦 Canada | |
| 3 | New York City | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Sod Webworm Moth sighting in Chicago on a given day, based on 72 verified sightings from GBIF citizen-science data. It is the 230th most-seen of the 978 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.
August
In that month about 10% of wildlife watchers report a Sod Webworm Moth in Chicago on a given day, against under 5% in September to July, the lowest months.
Yes
Of the 3 cities where we can rate Sod Webworm Moth sightings, Chicago has the highest daily chance: under 5%. Next come Montreal (Canada, under 5%) and New York City (United States, under 5%).
Same family: Crambidae
The closest relatives of the Sod Webworm Moth that you can see in Chicago (family Crambidae, Crambid Snout Moths) are Celery Leaftier Moth (about 10%), Lucerne Moth (about 10%) and Elegant Grass-Veneer (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Sod Webworm Moth is recorded against all the insects logged in Chicago (72 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.
