Drymus brunneus
In 3 days ~10% in a week ~20%
Drymus brunneus is a species of dirt-colored seed bug in the family Rhyparochromidae found in the Palearctic. In the West Palearctic it is lacking only in the far north of Northern and Eastern Europe. In the East, the species ranges to the Caucasus and Siberia.
In the Alps it is found up to 1300 meters above sea level. Habitats include shady deciduous and coniferous forests, lowland forests and occasionally more open habitats such as bogs and wet meadows. They are also found on banks by standing and flowing waters. In winter, flooding their habitat seems to be no problem.
Drymus brunneus lives hidden in damp, soil litter with fungus and moss. They suck at seeds of various herbaceous plants and trees, such as Birch (Betula) and Alder (Alnus). At favourable temperatures, the adults are active even in winter. Usually one generation per year occurs in Central Europe. The development cycle is seasonal, but not uniformly, so that the egg-laying can occur at different times of year in different parts of the range; thus overwintering can occur as imago or as egg. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Wadden Sea National Park | 🇩🇪 Germany |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Vancouver | 🇨🇦 Canada |
Rare
Under 5% of wildlife watchers report a Brown Groundbug sighting in Vancouver on a given day, based on 11 verified sightings from GBIF citizen-science data. It is the 314th most-seen of the 482 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Brown Groundbug in Vancouver on a given day, so our monthly data shows no clear season.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Brown Groundbug sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Only Vancouver, in our data
Vancouver is the only city on Wallace's Line with enough records to rate Brown Groundbug sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Brown Groundbug is recorded against all the insects logged in Vancouver (11 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.
