Calosoma (Calopachys) blaptoides Putzeys, 1845

Calosoma blaptoides Putzeys 1845: 400 (described from Mexique)
Eutelodontus atzecus Géhin, 1881: 132 (nomen nudum)
Calosoma (Eutelodontus) blaptoides Géhin, 1885: 33
Eutelodontum depressicolle tehuacanum Lapouge, 1924: 40 (described from Tehuacan, sintype: Naturalis Biodiversity Centre, Leiden)
Calosoma (Blaptosoma) blaptoides Breuning, 1928: 55
Blaptosoma (Eutelodontum) blaptoides Lapouge, 1929-32: 391
Blaptosoma (Eutelodontum) blaptoides tehuacanum Lapouge, 1929-32: 391
Calopachys blaptoides Jeannel, 1940: 235
Calosoma (Calopachis) blaptoides Gidaspow, 1959: 301
Calopachis blaptoides Erwin, 2007: 83
Calopachys blaptoides oaxacaensis Lassalle, 2009: 11 (type: Oaxaca, 30-50 km nord Oaxaca, 2200m; coll. Lassalle)
Calopachys blaptoides tlaxiacoensis Lassalle, 2009: 12 (type: Oaxaca, Sierra de Piedra de Olla, 2600m; coll. Lassalle)

Length 20-25 mm. blaptoides is distinguished from other species at first sight, for the color black without metallic reflections and for its elytra smooth with very faint traces of sculpture. The pronotum is transverse with with rounded rear sides.
It occurs in the northern part of Oaxaca State and spreads into Puebla (Tehuacan) and into Veracruz, even though the citations are all very old and the listed places hard to find. On the contrary its presence in Guanajuato (Pueblo Nuevo) is unlikely and Gidaspow (1959: 301), when indicating this, has probably misinterpreted a quote by Breuning (1928b: 56), since the name “Pueblo Nuevo” recurs very frequently in Mexico, and he, in this case refers to a small town in the state of Vera Cruz very close to its southern boundary..

Examined specimens and literature’s data
Mexico. Oaxaca: between Oaxaca and Tlaxiaco, 2750 m (SB), between Cerro Mochin and Ixtlan, 2900 m (AVT), Benito Juarez national park (SB), Llanos de Flores (SB), 30-50 km nord Oaxaca, 2200 m (Lassalle, 2009: 11), Sierra de Piedra de Olla, 2600 m (Lassalle, 2009: 12), Capulalpan (Breuning, 1928b: 56), between St. Ines del Monte and Cuatro Venados, San Martín Itunyoso, Huajuapan de León (UASM); Puebla: Tehuacan (type of tehuacanum; MNHN); Vera Cruz: Cerro de Plumas (= Cerro de la Palma), Pueblo Nuevo (Breuning, 1928b: 56).

Notes: Brachypterous. It lives in a variety of habitats, more frequently in dry forests on medium altitude from 2200 to 2700 (Lassalle, 2009: 12) but can arrive up to 3300m (Erwin, 2007: 83). It is nocturnal and, in daytime, it seeks shelter under leaf litter. Adults were collected in July and August on the basis of examined material but, according to Erwin, they can be found in the entire period from May to August.
C. blaptoides was imported in Hawaii from the United States, as it happened with other western Calosoma. It was introduced in 1923 and found again in numbers 25 years later (Funasaki & al., 1988: 113) and now it is present in the Hawaii as well as in the Mariana Islands (Guam) and it has been noted as an efficent predator of Lepidoptera Noctuidae (

Calosoma (Calopachys) blaptoides
Putzeys, 1845
Mexico, Oaxaca, between Oaxaca and Tlaxiaco 2750m, VII.2008
Calosoma (Calopachys) blaptoides
Putzeys, 1845
Mexico, Oaxaca, between Oaxaca and Tlaxiaco 2750m, VII.2008
Calosoma (Calopachys) blaptoides
Putzeys, 1845
Mexico, Oaxaca,(sub Calosoma tehuacanum Lapouge)
(coll. Muséum National d'Histoire Naturelle, Paris)