Xanthorhoe quadrifasiata
In 3 days ~10% in a week ~30%
Xanthorhoe quadrifasiata, the large twin-spot carpet, is a moth of the family Geometridae. It is found in most of Europe (except Portugal, Ireland, Iceland and Greece), east to the Near East and the eastern part of the Palearctic realm.
The wingspan is 29–32 mm. Adults are on wing from June to July. There is one generation per year. The larvae feed on various low-growing plants, including Ribes rubrum and Galium mollugo. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bavarian Forest National Park | 🇩🇪 Germany |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Minsk | 🇧🇾 Belarus | |
| 2 | Nizhny Novgorod | 🇷🇺 Russia | |
| 3 | Moscow | 🇷🇺 Russia |
Rare
Under 5% of wildlife watchers report a Large Twin-Spot Carpet sighting in Nizhny Novgorod on a given day, based on 8 verified sightings from GBIF citizen-science data. It is the 258th most-seen of the 405 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.
June and July
In those months about 10% of wildlife watchers report a Large Twin-Spot Carpet in Nizhny Novgorod on a given day, against under 5% in August to May, the lowest months.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Large Twin-Spot Carpet sightings with a recorded time, and about 7 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
2nd of 3
Of the 3 cities where we can rate Large Twin-Spot Carpet sightings, Nizhny Novgorod ranks 2nd at under 5%. The best odds are in Minsk (Belarus, about 10%).
GBIF citizen-science records
It is estimated from how often the Large Twin-Spot Carpet is recorded against all the insects logged in Nizhny Novgorod (8 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.
