Roeslerstammia erxlebella
In 3 days ~10%
Roeslerstammia erxlebella is a moth of the family Roeslerstammiidae. It is found in all of Europe (except Ireland, the Iberian Peninsula and the Balkan Peninsula), and east to Japan, where it is reported from Hokkaido, Shikoku, Kyushu and Honshu. Its wingspan is about 13mm.
Known host plants of R. erxlebella are species in the genera Tilia, Betula, Corylus and Acer. Eggs are laid on the tips of leaves, where the first and second instars of the caterpillars live as leaf miners inside a gallery. Later instars live outside in a slight web on the leaf underside. For pupation, an edge of the leaf is turned down and a white silken cocoon is built by the caterpillar. Before ecdysis of the adult, the pupa protrudes from the cocoon. The adults (moths) are diurnal (day-flying) but are also attracted to light in the night. The adult stage is present from May to August, but are most frequently found in June and July. In England, R. erxlebella has two generations per year, with the moths of the first generation flying in May and June, while the second generation flies in and August and September.
bladmineerders.nl Archived 2011-02-01 at the Wayback Machine Roeslerstammia... 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 a Copper Ermel sighting in Moscow on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 911th most-seen of the 1111 insects we can rate there. Over three days the chance rises to about 10%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Copper Ermel 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 Copper Ermel sightings: under 5% of wildlife watchers there report one on a given day.
Same order: Lepidoptera
The closest relatives of the Copper Ermel that you can see in Moscow (order Lepidoptera, Butterflies and Moths) are Green-Veined White (about 10%), Scarce Tortoiseshell (about 10%) and Common Blue (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Copper Ermel is recorded against all the insects logged in Moscow (6 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.
