Ectobius lapponicus
In 3 days ~20% in a week ~40%
Ectobius lapponicus, also known as the dusky cockroach, is a species of cockroach found in Europe, northern Asia (excluding China), the northeastern United States, and southeastern Canada. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cape Breton Highlands National Park | 🇨🇦 Canada | |
| 2 | Acadia National Park | 🇺🇸 United States | |
| 3 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 4 | Wadden Sea National Park | 🇩🇪 Germany |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Warsaw | 🇵🇱 Poland | |
| 2 | Helsinki | 🇫🇮 Finland | |
| 3 | Stockholm | 🇸🇪 Sweden | |
| 4 | Toronto | 🇨🇦 Canada | |
| 5 | Hamburg | 🇩🇪 Germany | |
| 6 | Berlin | 🇩🇪 Germany | |
| 7 | Nizhny Novgorod | 🇷🇺 Russia | |
| 8 | Munich | 🇩🇪 Germany | |
| 9 | Boston | 🇺🇸 United States | |
| 10 | Copenhagen | 🇩🇰 Denmark |
With luck
About 10% of wildlife watchers report a Dusky Cockroach sighting in Helsinki on a given day, based on 37 verified sightings from GBIF citizen-science data. It is the 154th most-seen of the 838 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.
June to September
In those months about 10% of wildlife watchers report a Dusky Cockroach in Helsinki on a given day, against under 5% in October to May, the lowest months.
Between 3 and 6 pm
Across all the parks we cover, that three-hour window holds the most Dusky Cockroach 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 11 cities where we can rate Dusky Cockroach sightings, Helsinki ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Warsaw (Poland, about 10%).
GBIF citizen-science records
It is estimated from how often the Dusky Cockroach is recorded against all the insects logged in Helsinki (37 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.
