Xanthorhoe labradorensis
In 3 days ~10% in a week ~20%
Xanthorhoe labradorensis, the Labrador carpet moth, is a moth of the family Geometridae. The species was first described by Alpheus Spring Packard in 1867. It is found across Canada from Newfoundland and Labrador to British Columbia and Alaska, north to Yukon and the Northwest Territories, south in the east to Louisiana and Mississippi. The habitat consists of open wooded areas and edges.
The wingspan is about 25 mm. There is one generation per year with adults on wing from late May to late August in the northern part of the range. 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 Labrador Carpet sighting in Boston on a given day, based on 8 verified sightings from GBIF citizen-science data. It is the 830th 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 Labrador Carpet in Boston on a given day, so our monthly data shows no clear season.
Among the best
Of the 5 cities where we can rate Labrador Carpet sightings, Boston ranks 3rd at under 5%, level with the leaders once rounded. The best odds are in Seattle (United States, under 5%) and Toronto (Canada, under 5%).
GBIF citizen-science records
It is estimated from how often the Labrador Carpet is recorded against all the insects logged in Boston (8 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.
