Brochymena affinis
In 3 days ~10% in a week ~20%
Brochymena affinis is a species of stink bug in the family Pentatomidae. It is found in North America. Wikipedia →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Brochymena affinis sighting in Portland on a given day, based on 10 verified sightings from GBIF citizen-science data. It is the 338th most-seen of the 507 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.
October and November
In those months about 10% of wildlife watchers report a Brochymena affinis in Portland on a given day, against under 5% in December to September, the lowest months. Those are among Portland's wettest months, with about 180 mm of rain a month against 10 mm in July.
Among the best
Of the 3 cities where we can rate Brochymena affinis sightings, Portland ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Seattle (United States, under 5%).
Same family: Pentatomidae
The closest relatives of the Brochymena affinis that you can see in Portland (family Pentatomidae, Stink Bugs) are Brown Marmorated Stink Bug (about 20%) and Green Stink Bug (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Brochymena affinis is recorded against all the insects logged in Portland (10 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.
