Epirrita autumnata
In 3 days ~10% in a week ~30%
The autumnal moth (Epirrita autumnata) is a moth of the family Geometridae. The species was first described by Moritz Balthasar Borkhausen in 1794. It is found throughout the Palearctic region and the Near East and has a much wider distribution than its two close relatives (see below). In Sápmi (Lapland), in some years, the numerous autumnal moth larvae defoliate square miles of birch forests on mountains. Wikipedia →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report an Autumnal Moth sighting in Moscow on a given day, based on 89 verified sightings from GBIF citizen-science data. It is the 135th 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 30%, if each day is a fresh chance.
September and October
In those months about 10% of wildlife watchers report an Autumnal Moth in Moscow on a given day, against under 5% in November to August, the lowest months.
2nd of 4
Of the 4 cities where we can rate Autumnal Moth sightings, Moscow ranks 2nd at under 5%. The best odds are in Helsinki (Finland, about 10%).
Same family: Geometridae
The closest relatives of the Autumnal Moth that you can see in Moscow (family Geometridae, Geometer Moths) are Winter Moth (about 10%), Common Carpet Moth (about 10%) and Northern Winter Moth (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Autumnal Moth is recorded against all the insects logged in Moscow (89 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.
