Mesoleuca gratulata
In 3 days ~30% in a week ~50%
Mesoleuca gratulata, known generally as the western white-ribboned carpet or half-white carpet moth, is a species of geometrid moth in the family Geometridae. It is found in North America. The MONA or Hodges number for Mesoleuca gratulata is 7308. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Redwood National Park | 🇺🇸 United States | |
| 2 | Olympic National Park | 🇺🇸 United States | |
| 3 | Great Bear Rainforest | 🇨🇦 Canada |
With luck
About 10% of wildlife watchers report a Western White-Ribboned Carpet sighting in Redwood National Park on a given day, based on 12 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 37th most-seen of the 101 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
March
In that month about 40% of wildlife watchers report a Western White-Ribboned Carpet in Redwood National Park on a given day, against under 5% in May and July–January, the lowest months. That is one of Redwood National Park's wettest months, with about 270 mm of rain against almost none in July.
Between 1 and 4 pm
Across all the parks we cover, that three-hour window holds the most Western White-Ribboned Carpet sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 3 parks where we can rate Western White-Ribboned Carpet sightings, Redwood National Park has the highest daily chance: about 10%. Next come Olympic National Park (United States, about 10%) and Great Bear Rainforest (Canada, about 10%).
Same family: Geometridae
The closest relatives of the Western White-Ribboned Carpet that you can see in Redwood National Park (family Geometridae, Geometer Moths) are California Black (about 20%), Omnivorous Looper (about 10%) and Pale Beauty (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Western White-Ribboned Carpet is recorded against all the insects logged in Redwood National Park (12 verified sightings from 2019 to 2026), 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.
