Leucoma salicis
In 3 days ~20% in a week ~50%
Leucoma salicis, also known as the white satin moth or satin moth, is a moth of the family Erebidae. The species was first described by Carl Linnaeus in his 10th edition of Systema Naturae from 1758. It is found in Europe including the British Isles excluding the far north. In the east it is found across the Palearctic to Japan. The species was introduced to North America in the 1920s.
Leucoma salicis has a wingspan of 37–50 mm. White, sometimes with black spots. The head and collar as well as the pectinations of the antennae are black. Tibiae and tarsi with broad black rings. The East-Asiatic species Leucoma candida (Staudinger, 1892) with different male genitalia structure, has much purer glossy white and entirely opaque, more thickly scaled, wings and is on the whole smaller, with narrower wings. From central and eastern Siberia, Mongolia, Amurland, Korea, China and Japan. Yellowish-grey specimens are ab. sohesti Capr. Specimens from Tian-shan with black pectinations of the antennae of the male are nigripennata Staudinger. ab. nigrociliata Fuchs has sharp black third of the costal margin and glossy black fringes; Germany, ab. rubicunda Strand... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Isle Royale National Park | 🇺🇸 United States | |
| 2 | Gros Morne National Park | 🇨🇦 Canada | |
| 3 | Ecrins National Park | 🇫🇷 France | |
| 4 | Vanoise National Park | 🇫🇷 France | |
| 5 | Mercantour National Park | 🇫🇷 France | |
| 6 | Grand Teton National Park | 🇺🇸 United States | |
| 7 | Yellowstone National Park | 🇺🇸 United States | |
| 8 | Wadden Sea National Park | 🇩🇪 Germany |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Liverpool | 🇬🇧 United Kingdom | |
| 2 | Calgary | 🇨🇦 Canada | |
| 3 | Manchester | 🇬🇧 United Kingdom | |
| 4 | Birmingham | 🇬🇧 United Kingdom | |
| 5 | Edmonton | 🇨🇦 Canada | |
| 6 | London | 🇬🇧 United Kingdom | |
| 7 | Seattle | 🇺🇸 United States | |
| 8 | Vancouver | 🇨🇦 Canada |
With luck
About 10% of wildlife watchers report a White Satin Moth sighting in Grand Teton National Park on a given day, based on 12 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 75th most-seen of the 140 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 50%, if each day is a fresh chance.
July
In that month about 20% of wildlife watchers report a White Satin Moth in Grand Teton National Park on a given day, against under 5% in September to June, the lowest months. That is one of Grand Teton National Park's driest months, with about 20 mm of rain against 85 mm in December.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most White Satin Moth 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.
6th of 8
Of the 8 parks where we can rate White Satin Moth sightings, Grand Teton National Park ranks 6th at about 10%. The best odds are in Isle Royale National Park (United States, about 40%), Gros Morne National Park (Canada, about 20%) and Ecrins National Park (France, about 10%).
Same family: Erebidae
The closest relatives of the White Satin Moth that you can see in Grand Teton National Park (family Erebidae, Underwing, Tiger, Tussock, and Allied Moths) are Spotted Tussock Moth (about 30%), Police Car Moth (about 10%) and St. Lawrence Tiger Moth (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the White Satin Moth is recorded against all the insects logged in Grand Teton 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.
