Psyche casta
In 3 days ~10% in a week ~20%
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 |
Rare
Under 5% of wildlife watchers report a Common Bagworm Moth sighting in Vienna on a given day, based on 15 verified sightings from GBIF citizen-science data. It is the 698th most-seen of the 1406 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.
December
In that month about 10% of wildlife watchers report a Common Bagworm Moth in Vienna on a given day, against under 5% in January to November, 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.
9th of 18
Of the 18 cities where we can rate Common Bagworm Moth sightings, Vienna ranks 9th at under 5%. The best odds are in London (United Kingdom, about 10%), Boston (United States, about 10%) and Amsterdam (Netherlands, about 10%).
Same order: Lepidoptera
The closest relatives of the Common Bagworm Moth that you can see in Vienna (order Lepidoptera, Butterflies and Moths) are Common Blue (about 20%), Scarce Swallowtail (about 20%) and Meadow Brown (about 20%), 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 Vienna (15 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.
