Apamea devastator
In 3 days ~10% in a week ~30%
Apamea devastator, the glassy cutworm, is a moth of the family Noctuidae. The moth is found in northeastern North America, including Nova Scotia, Alberta, New York, Ohio, and Massachusetts. The wingspan is 35 to 40 mm. The moth flies from May to September, depending on the location.
The larva, a cutworm, feeds on various grasses. It is subterranean and attacks the roots and basal stems of its hosts. Wikipedia →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Glassy Cutworm Moth sighting in Portland on a given day, based on 36 verified sightings from GBIF citizen-science data. It is the 186th most-seen of the 507 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.
July
In that month about 10% of wildlife watchers report a Glassy Cutworm Moth in Portland on a given day, against under 5% in August to June, the lowest months. That is one of Portland's driest months, with about 10 mm of rain against 250 mm in December.
2nd of 3
Of the 3 cities where we can rate Glassy Cutworm Moth sightings, Portland ranks 2nd at under 5%. The best odds are in Edmonton (Canada, about 10%).
GBIF citizen-science records
It is estimated from how often the Glassy Cutworm Moth is recorded against all the insects logged in Portland (36 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.
