Calosoma (Callistenia) moniliatum LeConte, 1852

Callisthenes moniliatus LeConte, 1852: 200 (type locality: Oregon); syntype (Oregon & Washington) in Museum of Comparative Zoology, Harvard University, Cambridge, Ma. (
Calosoma laqueatum LeConte, 1860: 318 (described from Saskatshewan); syntype in Museum of Comparative Zoology, Harvard University, Cambridge, Ma. (
Carabus bicolor Walker, 1866: 313 (type locality: British Columbia or Vancouver Island, by the title of the work); syntype in Natural History Museum, London (Lindroth, 1961: 53) (preoccupied by Carabus violaceus var. bicolor Letzner, 1850)
Callisthenes concinnus Casey, 1913: 66 (described from Priest Lake, Idaho); lectotype ♂ in National Museum of Natural History, Washington (
Carabus taedatus var. vancouvericus Csiki, 1927: 286 (nomen novum pro bicolor Walker)
Calosoma (Callisthenes) moniliatum Breuning, 1928: 78
Calosoma (Callisthenes) moniliatum concinnum Breuning, 1928: 77
Callisthenes (Callistenia) moniliatus Lapouge, 1931: 378
Callisthenes (Callistenia) moniliatus var. concinna Lapouge, 1931: 378
Microcallisthenes (Callistenia) moniliatus Jeannel, 1940: 177
Callisthenes (Microcallisthenes) moniliatus Gidaspow, 1959: 305
Callisthenes (Callistenia) moniliatus Erwin, 2007: 79

Length 15-17 C. moniliatum, as C. wilkesii, can be easily sorted out by the elongated shape of the body. Both these two species have a transverse pronotum slightly narrower at the base, with well-conformed rear angles clearly protruding from the baseline.
The sculpture of the elytra of C. moniliatum is characterized by primary intervals with chain-like elevations interrupted by large foveae, these intervals have a glossy surface, while the remaining surface of the elytra is matt. The secondary intervals consist in series of aligned grains and the tertiary ones are transformed in a confuse granulation. The color of the upper body is dark bronze, almost blackish in some cases, in other cases the color can be clear and bright.
C. moniliatum is relatively common in the mountainous areas of southern Canada and United States, on the western slopes of the Rocky Mountains and of Sierra Nevada. The presence of C. moniliatum in Arizona and California has been firstly indicated without further precisions by Burgess & Collins (1917: 114), then questioned by Breuning (1928: 78), but reported without comments by the later authors (Gidaspow, 1959: 305; Erwin, 2007: 79; Bosquet, 2012: 249)

Examined specimens and literature’s data
Canada. Alberta: Waterton Lakes National Park, Waghorn, Magrath, Happy Valley, Millarville, Didsbury, Olds, Bowden, Blackfalds (Lindroth, 1961: 53), Jumpingpound Creek, Bragg Creek, Prairie Bluff (UASM), Calgary (AC); British Columbia: Waneta, East Kootenay, Radium (UASM), Vancouver (EM), Cranbrook, Creston (Lindroth, 1961: 53); Nova Scotia (; Saskatchewan: Sylvan Lake NP, Saskatoon (Lindroth, 1961: 53), Baldwinton (UASM)
United States. Arizona, California, Nebraska, Oregon (Burgess & Collins, 1917: 114); Montana: Butte (Jeannel, 1940: 178); Idaho: Priest Lake (lectotype of concinnus), Idaho city (Breuning, 1928b: 77), Coolin (; Washington: Spokane (Breuning, 1928b: 77), Stevens Co. (Little Pend Oreille National Wildlife Refuge), Ferry Co (Colville National Forest) (

Notes: Contrary to the adjective “brachypterous” used by Jeannel (1940: 177), the wings of C. moniliatum are normally formed but, because of some peculiarities of their structure, Lindroth (1961: 51) expresses doubts about its ability to fly. C. moniliatum is found in uplands, from 1200 to 2200m altitude, on praries and dry forests. It is preferably nocturnal, taking refuge under stones in daytime (Erwin, 2007: 79). Adult are active mostly in early spring up to August.

Calosoma (Callistenia) moniliatum
LeConte, 1851
Canada: Alberta, Calgary, 1911 (coll. A. Casale)
Calosoma (Callistenia) moniliatum
LeConte, 1851
Canada: British Columbia, Vancouver (coll Migliaccio)

updated February 16 2021