Caenurgina crassiuscula
In 3 days ~10% in a week ~20%
Caenurgina crassiuscula, the clover looper or range grass moth, is a moth of the family Erebidae. The species was first described by Adrian Hardy Haworth in 1809. It is found from coast to coast in the United States and adjacent parts of Canada, in the west to the Northwest Territories, Yukon, and Alaska.
The wingspan is 30–40 mm. Adults are on wing from March to November depending on the location. The larvae feed on various species of clover, grass, and lupine. 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 Clover Looper Moth sighting in Boston on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 967th most-seen of the 1200 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 Clover Looper Moth in Boston on a given day, so our monthly data shows no clear season.
Among the best
Of the 6 cities where we can rate Clover Looper Moth sightings, Boston ranks 5th at under 5%, level with the leaders once rounded. The best odds are in Chicago (United States, under 5%), Toronto (Canada, under 5%) and Edmonton (Canada, under 5%).
Same family: Erebidae
The closest relatives of the Clover Looper Moth that you can see in Boston (family Erebidae, Underwing, Tiger, Tussock, and Allied Moths) are Isabella Tiger Moth (about 20%), Virginian Tiger Moth (about 10%) and Green Cloverworm Moth (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Clover Looper Moth is recorded against all the insects logged in Boston (6 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.
