Calosoma frigidum
In 3 days ~40% in a week ~70%
Calosoma frigidum, also known as the cold-country caterpillar hunter, is a species of ground beetle in the subfamily Carabinae. It was first described by William Kirby in 1837. Occurring throughout southern Canada and the United States, it is about 16mm to 27mm long and black, with rows of pits or dots along its elytra. These pits are an iridescent blue/green, and larger than the pits of many other Calosoma species. It can be found in wooded areas and is active at night, while hiding under debris by day. Increased soil temperature, such as that caused by forest fire, is known to cause adult C. frigidum beetles to leave their burrows. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Elk Island National Park | 🇨🇦 Canada | |
| 2 | Cape Breton Highlands National Park | 🇨🇦 Canada | |
| 3 | Shenandoah National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Edmonton | 🇨🇦 Canada |
Possible
About 20% of wildlife watchers report a Cold-Country Caterpillar Hunter sighting in Elk Island National Park on a given day, based on 16 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 39th most-seen of the 112 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
May and June
In those months about 30% of wildlife watchers report a Cold-Country Caterpillar Hunter in Elk Island National Park on a given day, against under 5% in July to April, the lowest months. Those are among Elk Island National Park's wettest months, with about 90 mm of rain a month against 20 mm in December.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Cold-Country Caterpillar Hunter sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 3 parks where we can rate Cold-Country Caterpillar Hunter sightings, Elk Island National Park has the highest daily chance: about 20%. Next come Cape Breton Highlands National Park (Canada, about 10%) and Shenandoah National Park (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Cold-Country Caterpillar Hunter is recorded against all the insects logged in Elk Island National Park (16 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.
