Calosoma (Callitropa) protractum LeConte, 1852

Calosoma protractum LeConte, 1862: 52 (described from: Arizona) syntypes in Museum of Comparative Zoology, Harvard University, Cambridge, Ma. (
Calosoma dolens Chaudoir, 1869: 376 (distribution: prés d‘Oaxaca); type material: one couple; lectotype ♂ (no locality label) designated by Deuve (1978: 250) in Muséum National d'Histoire Naturelle, Paris
Calosoma truncatum Géhin, 1885: 64, note 66 (described from Mexico) original material: 1 ♂ depository not stated
Calosoma (Callitropa) protractum Breuning, 1928a: 118
Callitropa (Paratropa) protracta Lapouge, 1932: 385
Callitropa (Carabosoma) protracta dolens Lapouge, 1932: 385
Callitropa (Carabosoma) protracta truncata Lapouge, 1932: 385
Callitropa (s. str.) protractum Jeannel, 1940: 214
Calosoma (Callitropa) protractum Gidaspow, 1959: 275
Calosoma (Callitropa) protracta Erwin, 2007: 102

Length 22-29 mm. protractum with externum and macrum was part of subgenus Callitropa (s. str.). As interpreted by Jeannel (1940), this subgenus included species characterized by an elongated shape, all of them winged, and, consequently, with metaepisterna longer than wide.
protractum is entirely black, its elytra are smooth with faintly punctate striae and few large punctures limited to the basal part.
It is found in Mexico and penetrates in southern United States: Arizona, Colorado and California to which Burgess & Collins add Kansas but this last data is considered very doubtfull by most subsequent authors.

Examined specimens and literature’s data
Mexico. Durango: Nombre de Dios (AMNH), Sierra Nayarit (Jeannel, 1940: 215); Guanajuato (Breuning, 1928a: 120); Guerrero: El Mogote (, UASM), El Resuello 1100 m (AVT), Amula (Jeannel, 1940: 215), Capulalpan (Gidaspow, 1959: 275); Jalisco: Chiquilistian (GP), Guadalajara (SB); Michoacan: Uruapan (, UASM); Morelos: Cuernavaca (Breuning, 1928a: 120), Jalastoc, Puente de Ixtla, Progreso (Gidaspow, 1959: 275); Nuevo Leon: Monterrey, Villa de Gareis (Gidaspow, 1959: 275); Oaxaca (lectotype of dolens, MNHN); Puebla (Jeannel, 1940: 215); Sonora: Huachinera (, UASM)
United States. California (sintype, MCZ); Arizona: Santa Cruz County (, Colorado, Kansas (Burgess & Collins, 1917: 26)

Notes: Winged. Lives on midland and upland from 1100 up to 1700m. Active individuals have been found between June and October, according to data of the examined materials.

Calosoma (Callitropa) protractum
LeConte, 1852
Mexico. Guerrero, Hoya Corraleyo, El Resuello, m 1100, 26.X.1969, V. Sbordoni leg. (coll. Vigna Taglianti)
Calosoma (Callitropa) protractum
LeConte, 1852
Mexico. Jalisco, Chiquilistian, 14.8.89 (coll. G. Pontuale)

last review April 22 2019