Calosoma (Castrida) trapezipenne Chaudoir, 1869
Calosoma imbricatum Brullé, 1838: 42 (preoccupied by imbricatum Klug, 1832) (type locality: Patagonia); original material 1♀ (d’Orbigny legit); holotype ♀ designated by Deuve (1978: 248) by monotypy in Muséum National d'Histoire Naturelle, Paris) [examined]
Calosoma trapezipenne Chaudoir, 1869: 369 (type locality: Mendoza); original material 1♂; holotype ♂ (no locality label) designated by Deuve (1978: 249) by monotypy in Muséum National d'Histoire Naturelle, Paris) [examined]
Calosoma laterale var. Orbignyi Géhin, 1885: 59 (new name for imbricatum Brullé, 1838)
Caminara (Catastriga) trapezipenne Lapouge, 1929: 9
Calosoma (Callistriga) trapezipenne Breuning, 1927: 203
Castrida (Catastriga) trapezipenne Jeannel, 1940: 93
Calosoma (Castrida) trapezipenne Gidaspow, 1963: 287
Length 22-25 mm. As C. bridgesi and all the endemic species of Castrida of the Galapagos islands, C. trapezipenne is characterized by the elytral margin even, without trace of serration.
C. trapezipenne is easily recognizable for its pronotum strongly transverse and for the elytra in oval widened. As C. bridgesi, it is characterized by the presence of a seta on the metatrochanter, unlike other species of Castrida. The upper body is reddish bronze. Lapouge created for this species the subgenus Catastriga that was mantained by Jeannel (1940) as subgenus of the genus Castrida, but considered superfluous by Gidaspow (1963) and by the later authors.
It lives in the Western plateau of Argentina, down to the provinces of north Patagonia.
Examined specimens and literature’s data
Argentina. Patagonia (type imbricatum Brullé; MNHN); Catamarca: Santa Maria, Hualfin (Breuning, 1928b: 96); Cordoba: (Breuning, 1927: 203), Manfredi (TTU, www.gbif.org/); Jujuy: La Cienega (Breuning, 1928b: 96); La Rioja (Erwin, 2007: 106); Mendoza: (type trapezipenne Chaudoir; MNHN) city of Mendoza (IADIZA, www.gbif.org/); Neuquén: Covunco, Añelo, San Martín de Los Andes (IADIZA, www.gbif.org/); Rio Negro: Cipolletti (SB), Villa Regina (SB), Lamarque (Gidaspow, 1963: 288), Los Menucos (IADIZA, www.gbif.org/); San Juan (Breuning, 1928b: 96): dept. Rawson (www.inaturalist.org); San Luis (Erwin, 2007: 106)
Notes: Winged. According to Gidaspow (1963: 288) it can be found in xerophyte forests and in dry bush and desert scrub, but not common. On the basis of the material examined were noted captures of active individuals after the end of the raining season from November to January up to the beginning of March.
 Chaudoir, 1869 Patagonia (holotype of Calosoma imbricatum Brullé, 1838) (Muséum National d'Histoire Naturelle, Paris) |
 Chaudoir, 1869 Mendoza (holotype) (Muséum National d'Histoire Naturelle, Paris) |
 Chaudoir, 1869 Argentina: Rio Negro, Cipolletti, I.57 |
 Chaudoir, 1869 Argentina: Rio Negro, Villa Regina, XI.63 |