Scaphinotus marginatus
In 3 days ~10% in a week ~30%
Scaphinotus marginatus, the margined snail-eating beetle, is a species of ground beetle in the family Carabidae. It is found in North America (Alberta, British Columbia, Quebec, Alaska, California, Idaho, Montana, Oregon, Washington, Wyoming), where it inhabits coniferous, mixed and deciduous forests, often along streams and lakes.
Adults are brachypterous and nocturnal. They prey on snails and slugs. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Margined Snail-Eating Beetle sighting in Portland on a given day, based on 33 verified sightings from GBIF citizen-science data. It is the 200th 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 30%, if each day is a fresh chance.
April and October–November
In those months about 10% of wildlife watchers report a Margined Snail-Eating Beetle in Portland on a given day, against under 5% in May–September and December–March, the lowest months.
Yes
Of the 2 cities where we can rate Margined Snail-Eating Beetle sightings, Portland has the highest daily chance: under 5%. Next come Vancouver (Canada, under 5%).
GBIF citizen-science records
It is estimated from how often the Margined Snail-Eating Beetle is recorded against all the insects logged in Portland (33 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.
