Necrodes littoralis
In 3 days ~10% in a week ~30%
Necrodes littoralis, also known as the shore sexton beetle, is a species of carrion beetle of the genus Necrodes, found in countries across Europe. As a carrion beetle, it feeds on decaying vertebrate remains and maggots. This species' feeding behaviors make it an important asset to forensic entomology.
Adults of N. littoralis grow to be 15 to 25 mm (0.59 to 0.98 in) long and have a shiny black body. The beetles can be identified by a characteristic bump about three quarters down the length of their elytra, a hardened forewing that act as armor to protect the beetle from environmental factors and predators. Beetles of the order Coleoptera, like N. littoralis, have truncated elytra. The reason why some beetle species have adapted a shortened protection armor is unclear. The larvae of N. littoralis are campodeiform, meaning they have a flattened body, antennae, and have well-developed legs.
N. littoralis has a Palearctic distribution, but most observations are reported across Europe. They have been observed in Austria, Hungary, Slovakia, Czech Republic, Belgium, France, and England. Outside of Europe, N. littoralis has been observed in South Korea... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 2 | Cévennes National Park | 🇫🇷 France | |
| 3 | Pyrénées National Park | 🇫🇷 France | |
| 4 | Wadden Sea National Park | 🇩🇪 Germany |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Paris | 🇫🇷 France |
Rare
Under 5% of wildlife watchers report a Shore Sexton Beetle sighting in Cévennes National Park on a given day, based on 9 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 730th most-seen of the 996 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 August
In those months about 10% of wildlife watchers report a Shore Sexton Beetle in Cévennes National Park on a given day, against under 5% in July and September–May, the lowest months.
Between 11 pm and 2 am
Across all the parks we cover, that three-hour window holds the most Shore Sexton Beetle sightings with a recorded time, and about 7 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
2nd of 4
Of the 4 parks where we can rate Shore Sexton Beetle sightings, Cévennes National Park ranks 2nd at under 5%. The best odds are in Bavarian Forest National Park (Germany, about 10%).
GBIF citizen-science records
It is estimated from how often the Shore Sexton Beetle is recorded against all the insects logged in Cévennes National Park (9 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.
