Aegialia arenaria
In 3 days ~20% in a week ~40%
Aegialia arenaria, the dune scarab beetle, is a species of beetle in the family Scarabaeidae. It is found in the Palearctic and Nearctic. It is a coastal species found on sand dunes of western and northern Europe (Netherlands, Belgium, France (Nord-Pas-de-Calais), Germany, Denmark, Portugal, Spain, Britain, Ireland, Norway, Sweden, Finland) and in the Nearctic from Nova Scotia in Canada (Sable Island), to Massachusetts and New Hampshire. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Snowdonia National Park | 🇬🇧 United Kingdom | |
| 2 | Wadden Sea National Park | 🇩🇪 Germany |
With luck
About 10% of wildlife watchers report an Aegialia arenaria sighting in Wadden Sea National Park on a given day, based on 34 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 185th most-seen of the 818 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
March–April, June–August and October
In those months about 10% of wildlife watchers report an Aegialia arenaria in Wadden Sea National Park on a given day, against under 5% in May, September and November–February, the lowest months.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Aegialia arenaria sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 2 parks where we can rate Aegialia arenaria sightings, Wadden Sea National Park ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Snowdonia National Park (United Kingdom, about 10%).
Same family: Scarabaeidae
The closest relatives of the Aegialia arenaria that you can see in Wadden Sea National Park (family Scarabaeidae, Scarabs) are Garden Chafer (about 10%), Brown Chafer (about 10%) and Dune Chafer (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Aegialia arenaria is recorded against all the insects logged in Wadden Sea National Park (34 verified sightings from 2019 to 2026), 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.
