Ypsolopha vittella
In 3 days ~10% in a week ~20%
Ypsolopha vittella, the elm autumn moth, is a moth of the family Ypsolophidae. It is found from Europe through Siberia to Japan, including China, Asia Minor and mideast Asia. The habitat consists of woodlands and copses.
The wingspan is 16–20 mm. The head is light grey. Forewings pale grey or whitish-grey, sometimes brownish-mixed, sprinkled or strigulated with dark grey, sometimes more or less wholly suffused with blackish; a blackish or dark fuscous streak along dorsum, forming triangular projections upwards before and beyond middle. Hindwings are grey. The larva is brown- blackish; dorsal stripe broadly whitish.
Adults are on wing from July to August. There is one generation per year. The larvae feed on the leaves and flowers of Ulmus and Fagus species. Other recorded food plants include Quercus, Lonicera and Acer pseudosieboldianum. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Moscow | 🇷🇺 Russia |
Rare
Under 5% of wildlife watchers report an Elm Smudge sighting in Moscow on a given day, based on 9 verified sightings from GBIF citizen-science data. It is the 727th most-seen of the 1111 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 an Elm Smudge in Moscow on a given day, so our monthly data shows no clear season.
Only Moscow, in our data
Moscow is the only city on Wallace's Line with enough records to rate Elm Smudge sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Elm Smudge is recorded against all the insects logged in Moscow (9 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.
