Cydnus aterrimus
In 3 days ~20% 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 |
With luck
About 10% of wildlife watchers report a Black Burrowing Bug sighting in Porto on a given day, based on 19 verified sightings from GBIF citizen-science data. It is the 242nd most-seen of the 498 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
March and May–August
In those months about 10% of wildlife watchers report a Black Burrowing Bug in Porto on a given day, against under 5% in April and September–February, the lowest months. Those are among Porto's driest months, with about 50 mm of rain a month against 140 mm in January.
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.
Among the best
Of the 17 cities where we can rate Black Burrowing Bug sightings, Porto ranks 8th at about 10%, level with the leaders once rounded. The best odds are in Barcelona (Spain, about 10%), Valencia (Spain, about 10%) and Izmir (Turkey, about 10%).
GBIF citizen-science records
It is estimated from how often the Black Burrowing Bug is recorded against all the insects logged in Porto (19 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.
