Cychrus tuberculatus
In 3 days ~10% in a week ~20%
Cychrus tuberculatus, the tuberculate rare snail-eating beetle, is a species of ground beetle in the subfamily Carabinae. It was described by Thaddeus William Harris in 1839. This species is found in British Columbia, Quebec, California, Oregon and Washington, where it inhabits coniferous forests, forest clearings and moraines.
Adults are brachypterous and nocturnal. They prey on snails. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Great Bear Rainforest | 🇨🇦 Canada | |
| 2 | Olympic National Park | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Cychrus tuberculatus sighting in Olympic National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 182nd most-seen of the 207 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.
May
In that month about 10% of wildlife watchers report a Cychrus tuberculatus in Olympic National Park on a given day, against under 5% in June to April, the lowest months. That is one of Olympic National Park's driest months, with about 90 mm of rain against 370 mm in November.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Cychrus tuberculatus sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 2
Of the 2 parks where we can rate Cychrus tuberculatus sightings, Olympic National Park ranks 2nd at under 5%. The best odds are in Great Bear Rainforest (Canada, about 10%).
Same family: Carabidae
The closest relatives of the Cychrus tuberculatus that you can see in Olympic National Park (family Carabidae, Ground Beetles) are Narrow-Collared Snail-Eating Beetle (about 20%), Western Tiger Beetle (about 10%) and Boreal Long-Lipped Tiger Beetle (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Cychrus tuberculatus is recorded against all the insects logged in Olympic National Park (5 verified sightings from 2019 to 2026), 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.
