Swammerdamia pyrella
In 3 days ~10% in a week ~30%
Swammerdamia pyrella is a moth of the family Yponomeutidae. It is found in Europe, North America and Japan. The wingspan is 10–13 mm. The head is white or whitish ochreous. Thorax is dark fuscous, whitish-sprinkled. Forewings are fuscous, faintly purplish-tinged, closely irrorated with dark fuscous, and irregularly sprinkled with whitish; a dark purplish fuscous entire fascia before middle; a whitish anteapical costal spot; cilia dark coppery - fuscous. Hindwings are grey. The larva is pale yellow; subdorsal line dark red-brown; 4-12 with pale brown anterior bands; head brown, sides blackish.
The moth flies in two generations from late April to August.[1]. The larvae feed on Crataegus, apple, pear and cherry. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bavarian Forest National Park | 🇩🇪 Germany |
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Little Ermel sighting in Bavarian Forest National Park on a given day, based on 6 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 964th most-seen of the 1115 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
May and August
In those months about 10% of wildlife watchers report a Little Ermel in Bavarian Forest National Park on a given day, against under 5% in June–July and September–April, the lowest months.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Little Ermel sightings with a recorded time, and nearly all of them come between 6 pm and 6 am: it is mostly seen at night.
Only Bavarian Forest National Park, in our data
Bavarian Forest National Park is the only park on Wallace's Line with enough records to rate Little Ermel sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Yponomeutidae
The closest relatives of the Little Ermel that you can see in Bavarian Forest National Park (family Yponomeutidae, Ermine Moths) are Bird-Cherry Ermine (about 10%) and Black-Tipped Ermine (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Little Ermel is recorded against all the insects logged in Bavarian Forest National Park (6 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.
