Cydnus aterrimus
In 3 days ~40% in a week ~70%
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 |
Possible
About 20% of wildlife watchers report a Black Burrowing Bug sighting in Sierra Nevada National Park on a given day, based on 15 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 113th most-seen of the 479 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
April and May
In those months about 30% of wildlife watchers report a Black Burrowing Bug in Sierra Nevada National Park on a given day, against under 5% in August to March, 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.
Yes
Of the 4 parks where we can rate Black Burrowing Bug sightings, Sierra Nevada National Park has the highest daily chance: about 20%. Next come Cévennes National Park (France, about 10%) and Sierra de Guadarrama National Park (Spain, under 5%).
Same family: Cydnidae
The closest relatives of the Black Burrowing Bug that you can see in Sierra Nevada National Park (family Cydnidae, Burrowing Bugs) are Macroscytus brunneus (about 10%) and Crocistethus waltlianus (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Black Burrowing Bug is recorded against all the insects logged in Sierra Nevada National Park (15 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.
