Nola confusalis
In 3 days ~10% in a week ~20%
Nola confusalis, the least black arches, is a moth of the family Nolidae. It is found in most of Europe, east to eastern Asia and Japan. The wingspan is 16–18 mm. Adults are on wing from mid April to mid June in one generation in western Europe.
The larvae mainly feed on various deciduous trees and bushes, including lime (Tilia species) and evergreen oak (Quercus ilex). Larvae can be found from June to August. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Snowdonia National Park | 🇬🇧 United Kingdom | |
| 2 | Cairngorms National Park | 🇬🇧 United Kingdom | |
| 3 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 4 | Pyrénées National Park | 🇫🇷 France |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Birmingham | 🇬🇧 United Kingdom | |
| 2 | Liverpool | 🇬🇧 United Kingdom | |
| 3 | London | 🇬🇧 United Kingdom | |
| 4 | Paris | 🇫🇷 France |
Rare
Under 5% of wildlife watchers report a Least Black Arches sighting in Paris on a given day, based on 11 verified sightings from GBIF citizen-science data. It is the 519th most-seen of the 916 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.
April
In that month about 10% of wildlife watchers report a Least Black Arches in Paris on a given day, against under 5% in May to March, the lowest months.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Least Black Arches sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
Among the best
Of the 4 cities where we can rate Least Black Arches sightings, Paris ranks 4th at under 5%, level with the leaders once rounded. The best odds are in Birmingham (United Kingdom, under 5%), Liverpool (United Kingdom, under 5%) and London (United Kingdom, under 5%).
GBIF citizen-science records
It is estimated from how often the Least Black Arches is recorded against all the insects logged in Paris (11 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.
