Melanthia procellata
In 3 days ~10% in a week ~20%
Melanthia procellata, the pretty chalk carpet, is a species of moth of the family Geometridae. It is found throughout Europe. The wingspan is 27–32 mm. The moth flies from May to August.[1] The caterpillars feed on Clematis vitalba. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Pyrénées National Park | 🇫🇷 France | |
| 2 | Bavarian Forest National Park | 🇩🇪 Germany |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Copenhagen | 🇩🇰 Denmark |
Rare
Under 5% of wildlife watchers report a Pretty Chalk Carpet sighting in Copenhagen on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 424th most-seen of the 476 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.
August
In that month about 10% of wildlife watchers report a Pretty Chalk Carpet in Copenhagen on a given day, against under 5% in September to July, the lowest months. That is one of Copenhagen's wettest months, with about 85 mm of rain against 35 mm in April.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Pretty Chalk Carpet sightings with a recorded time, and nearly all of them come between 6 pm and 6 am: it is mostly seen at night.
Only Copenhagen, in our data
Copenhagen is the only city on Wallace's Line with enough records to rate Pretty Chalk Carpet sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Geometridae
The closest relatives of the Pretty Chalk Carpet that you can see in Copenhagen (family Geometridae, Geometer Moths) are Small Dusty Wave (about 10%), Double-Striped Pug (about 10%) and Riband Wave (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Pretty Chalk Carpet is recorded against all the insects logged in Copenhagen (5 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.
