Psyche casta
In 3 days ~20% in a week ~30%
Psyche casta is a nocturnal moth from the family Psychidae, the bagworm moths. The wingspan of the males ranges from 12 to 15 millimeters. They have hairy, brown-metallic shiny wings. The grub-like females have legs but do not have wings and are yellowish or light brown, except for some dark brown back plates.
The host plants are from the groups: Poaceae, birch, willow, poplar and Vaccinium. The caterpillars make a protective hull from grass. The flight time ranges from May to July. Originally from the Old World, they have been introduced in North America. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Shenandoah National Park | 🇺🇸 United States | |
| 2 | Cévennes National Park | 🇫🇷 France | |
| 3 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 4 | Acadia National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | London | 🇬🇧 United Kingdom | |
| 2 | Boston | 🇺🇸 United States | |
| 3 | Amsterdam | 🇳🇱 Netherlands | |
| 4 | Minneapolis [Saint Paul] | 🇺🇸 United States | |
| 5 | Rotterdam [The Hague] | 🇳🇱 Netherlands | |
| 6 | Washington | 🇺🇸 United States | |
| 7 | Philadelphia | 🇺🇸 United States | |
| 8 | Munich | 🇩🇪 Germany | |
| 9 | Vienna | 🇦🇹 Austria | |
| 10 | Miami | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Common Bagworm Moth sighting in Cévennes National Park on a given day, based on 10 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 590th most-seen of the 996 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
May and June
In those months about 10% of wildlife watchers report a Common Bagworm Moth in Cévennes National Park on a given day, against under 5% in July to April, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Common Bagworm Moth sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 4 parks where we can rate Common Bagworm Moth sightings, Cévennes National Park ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Shenandoah National Park (United States, about 10%).
Same order: Lepidoptera
The closest relatives of the Common Bagworm Moth that you can see in Cévennes National Park (order Lepidoptera, Butterflies and Moths) are Scarce Swallowtail (about 40%), Sooty Copper (about 40%) and Speckled Wood (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Common Bagworm Moth is recorded against all the insects logged in Cévennes National Park (10 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.
