Cydnus aterrimus
In 3 days ~10% in a week ~30%
Cydnus aterrimus is a species of burrowing bug in the family Cydnidae. It is found in the Caribbean, Europe and Northern Asia (excluding China), North America, and Southern Asia. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sierra Nevada National Park | 🇪🇸 Spain | |
| 2 | Cévennes National Park | 🇫🇷 France | |
| 3 | Sierra de Guadarrama National Park | 🇪🇸 Spain | |
| 4 | Pyrénées National Park | 🇫🇷 France |
Rare
Under 5% of wildlife watchers report a Black Burrowing Bug sighting in Sierra de Guadarrama National Park on a given day, based on 10 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 325th most-seen of the 597 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–June and August
In those months about 10% of wildlife watchers report a Black Burrowing Bug in Sierra de Guadarrama National Park on a given day, against under 5% in July and September–April, the lowest months.
Between 3 and 6 pm
Across all the parks we cover, that three-hour window holds the most Black Burrowing Bug sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
3rd of 4
Of the 4 parks where we can rate Black Burrowing Bug sightings, Sierra de Guadarrama National Park ranks 3rd at under 5%. The best odds are in Sierra Nevada National Park (Spain, about 20%) and Cévennes National Park (France, about 10%).
GBIF citizen-science records
It is estimated from how often the Black Burrowing Bug is recorded against all the insects logged in Sierra de Guadarrama National Park (10 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.
