Eudemis porphyrana
In 3 days ~10% in a week ~20%
Eudemis porphyrana is a moth of the family Tortricidae. It is found in most of Europe (except Iceland, Ireland, the Iberian Peninsula, the western part of the Balkan Peninsula, and Ukraine), east to the eastern part of the Palearctic realm.
The wingspan is 17–21 mm. Adults are on wing from June to August. The larvae feed on Padus avium, Pyrus, Quercus, Salix caprea. It is sometimes considered a pest Malus, Prunus, Crataegus and Ribes. They roll a leaf of their host and feed within. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report an Apple Marble sighting in Helsinki on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 602nd most-seen of the 838 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.
July and August
In those months about 10% of wildlife watchers report an Apple Marble in Helsinki on a given day, against under 5% in September to June, the lowest months.
Yes
Of the 2 cities where we can rate Apple Marble sightings, Helsinki has the highest daily chance: under 5%. Next come Moscow (Russia, under 5%).
Same family: Tortricidae
The closest relatives of the Apple Marble that you can see in Helsinki (family Tortricidae, Tortricid Leafroller Moths) are Barred Marble (about 10%), Common Marble (about 10%) and White-Foot Bell (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Apple Marble is recorded against all the insects logged in Helsinki (7 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.
