Calosoma frigidum
In 3 days ~10% in a week ~20%
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 |
Rare
Under 5% of wildlife watchers report a Cold-Country Caterpillar Hunter sighting in Edmonton on a given day, based on 11 verified sightings from GBIF citizen-science data. It is the 202nd most-seen of the 390 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 and June
In those months about 10% of wildlife watchers report a Cold-Country Caterpillar Hunter in Edmonton on a given day, against under 5% in July to April, the lowest months. Those are among Edmonton's wettest months, with about 75 mm of rain a month against 20 mm in February.
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.
Only Edmonton, in our data
Edmonton is the only city on Wallace's Line with enough records to rate Cold-Country Caterpillar Hunter sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Carabidae
The closest relatives of the Cold-Country Caterpillar Hunter that you can see in Edmonton (family Carabidae, Ground Beetles) are Bronze Ground Beetle (about 10%), Granulated Ground Beetle (about 10%) and Rain Beetle (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Cold-Country Caterpillar Hunter is recorded against all the insects logged in Edmonton (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.
