Nepa cinerea
In 3 days ~10% in a week ~30%
Nepa cinerea is a species of water scorpion (Nepidae), found in most of Europe, including the British Isles, as well as North Africa and southern and northern Asia. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cévennes National Park | 🇫🇷 France | |
| 2 | Monfragüe National Park | 🇪🇸 Spain | |
| 3 | Fertő-Hanság National Park | 🇭🇺 Hungary | |
| 4 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 5 | Pyrénées National Park | 🇫🇷 France | |
| 6 | Wadden Sea National Park | 🇩🇪 Germany | |
| 7 | Sierra de Guadarrama National Park | 🇪🇸 Spain |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | London | 🇬🇧 United Kingdom | |
| 2 | Birmingham | 🇬🇧 United Kingdom | |
| 3 | Copenhagen | 🇩🇰 Denmark | |
| 4 | Manchester | 🇬🇧 United Kingdom | |
| 5 | Cologne | 🇩🇪 Germany | |
| 6 | Minsk | 🇧🇾 Belarus | |
| 7 | Madrid | 🇪🇸 Spain | |
| 8 | Essen | 🇩🇪 Germany | |
| 9 | Prague | 🇨🇿 Czechia | |
| 10 | Kyiv | 🇺🇦 Ukraine |
Rare
Under 5% of wildlife watchers report a Eurasian Water Scorpion sighting in Essen on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 316th most-seen of the 434 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.
May and August–September
In those months about 10% of wildlife watchers report a Eurasian Water Scorpion in Essen on a given day, against under 5% in June–July and October–April, the lowest months.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Eurasian Water Scorpion sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
8th of 17
Of the 17 cities where we can rate Eurasian Water Scorpion sightings, Essen ranks 8th at under 5%. The best odds are in London (United Kingdom, about 10%), Birmingham (United Kingdom, about 10%) and Copenhagen (Denmark, about 10%).
Same order: Hemiptera
The closest relatives of the Eurasian Water Scorpion that you can see in Essen (order Hemiptera, True Bugs, Hoppers, Aphids, and allies) are European Firebug (about 30%), Brown Marmorated Stink Bug (about 30%) and Green Shield Bug (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Eurasian Water Scorpion is recorded against all the insects logged in Essen (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.
