Campaea perlata
In 3 days ~10% in a week ~20%
Campaea perlata, the pale beauty, also known as the fringed looper (caterpillar), is a species of moth in the family Geometridae, known as geometer moths, found in North America. Some sources also name it the light emerald, though this may be confused with the related European moth Campaea margaritata. It is common throughout its range.
The name "perlata" comes from post-classical Latin for "pearly". The pale beauty is a medium-sized moth with an average wingspan of about 28–51 mm. The female tends to be much larger than the male. It is pale greenish to white, with postmedial and antemedial faint lines that run continuously across the forewings and hindwings.
The larva of the pale beauty falls in the category of "inchworms" or "loopers". The looping gait of these caterpillars is the result of having appendages only at the front and back of the body. The caterpillars are about 4 cm in length and mottled gray to reddish, pale underneath, with a dark band from the top of the head to the eye. It has a fringe-like row of setae on the lower sides of the body and an extra set of prolegs on the fifth segment of the abdomen (i.e. the 8th segment of the animal). The caterpillars... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Great Smoky Mountains National Park | 🇺🇸 United States | |
| 2 | Gros Morne National Park | 🇨🇦 Canada | |
| 3 | Shenandoah National Park | 🇺🇸 United States | |
| 4 | Cape Breton Highlands National Park | 🇨🇦 Canada | |
| 5 | Acadia National Park | 🇺🇸 United States | |
| 6 | Redwood National Park | 🇺🇸 United States | |
| 7 | Elk Island National Park | 🇨🇦 Canada | |
| 8 | Pacific Rim National Park Reserve | 🇨🇦 Canada | |
| 9 | Great Bear Rainforest | 🇨🇦 Canada | |
| 10 | Jasper National Park | 🇨🇦 Canada | |
| 11 | Olympic National Park | 🇺🇸 United States | |
| 12 | Banff National Park | 🇨🇦 Canada |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Anchorage | 🇺🇸 United States | |
| 2 | Boston | 🇺🇸 United States | |
| 3 | Detroit | 🇺🇸 United States | |
| 4 | Toronto | 🇨🇦 Canada | |
| 5 | Montreal | 🇨🇦 Canada | |
| 6 | Baltimore | 🇺🇸 United States | |
| 7 | Seattle | 🇺🇸 United States | |
| 8 | Edmonton | 🇨🇦 Canada | |
| 9 | Vancouver | 🇨🇦 Canada | |
| 10 | Washington | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Pale Beauty sighting in San Francisco on a given day, based on 18 verified sightings from GBIF citizen-science data. It is the 362nd most-seen of the 737 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 Pale Beauty in San Francisco on a given day, so our monthly data shows no clear season.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Pale Beauty sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
15th of 15
Of the 15 cities where we can rate Pale Beauty sightings, San Francisco ranks 15th at under 5%. The best odds are in Anchorage (United States, about 10%), Boston (United States, about 10%) and Detroit (United States, about 10%).
GBIF citizen-science records
It is estimated from how often the Pale Beauty is recorded against all the insects logged in San Francisco (18 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.
