Calosoma (Calodrepa) aurocinctum Chaudoir, 1850

Calosoma aurocinctum Chaudoir, 1850: 420 (lectotypus: Mexique; Muséum National d'Histoire Naturelle, Paris)
Calosoma (Calosoma) aurocinctum Breuning, 1927a: 162
Calosoma (Calodrepa) aurocincta Lapouge, 1932: 405
Calodrepa aurocinctum Jeannel, 1940: 78
Calosoma (Calodrepa) aurocinctum Gidaspow, 1959: 248
Calosoma (Calosoma) aurocinctum Erwin, 2007: 89

Length 22-27 mm. C. aurocinctum has the entire upper side of the body of a bright green color; moreover, as the name suggests, it is well characterized by a purple or golden green border along the lateral margin of the elytra. From C. scrutator , that has similar color pattern on the elytra, C. aurocinctum can be distinguished by its pronotum that is narrowed behind with sparse punctures at its base, of an uniform metallic green color, sometimes with a slightly lighter border.
C. aurocinctum is basically a Mexican species. In Mexico it spreads throughout the whole country except in the far north, but seems to be more common in the eastern part of the country facing the Gulf of Mexico. To North penetrates into Texas where is found in the ending portion of the Rio Grande, along its left bank, while towards south it could be sporadically present in other countries of Central America, arriving in Nicaragua. The remains of a specimen have been recently found in the feces of a gray fox (Urocyon cinereoargenteus) in Nicaragua (Muñoz & Maes, 2015: 5). The determination of these remains can not be absolutely certain, as being based only on the elytra and given the possibility of confusion with C. scrutator, but Gidaspow (1963: 283) had already indicated the presence of this species in Nicaragua even though without specifying any locations.

Examined specimens and literature’s data
Mexico. Campeche: Edzna ruin (GP, EM), Champoton sea shores (AVT); Chiapas (AVT, EM); Durango: Sierra de Durango (Breuning, 1927: 162); Sierra de la Silla (http://carabidae.org); Morelos: 5 mi. W Antigua (SB), Cuernavaca Piramide (Gidaspow, 1959: 248); Nuevo Leon: Tamauli pass (GP), Allende, Apodaca, Santiago, Monterrey (Gidaspow, 1959: 248); Oaxaca: Oaxaca (GP), Salina Cruz (Gidaspow, 1959: 248); Quintana Roo (GP, SB); San Luis Potosi: Ciudad Valles (SB); Sinaloa (VV); Tamaulipas: Ciudad Victoria (EM), Rio Sabinas, Magiscatzin, Villa Manuel, Villagran, Ciudad Mante (UASM), 26 ml N Gonzalez 650m (TAMUIC); Vera Cruz: Los Tuxtlas (SB), Playa Vicente, Montemorelos (Gidaspow, 1959: 248); Yucatan: Pisté (AVT, EM), Chichen Itzà (AVT), X-can (AVT), Merida (Gidaspow, 1959: 248)
United States: Arizona ? (SB); Texas: Hidalgo co., McManus Unit; Cameron co., Laguna Atascosa; Cameron co., 2.4 miles E Palmito Hill (TAMUIC); Cameron co., Brownsville (SB)

Notes: C. aurocinctum is winged, diurnal and nocturnal, attracted to light at night. sometimes very abundant in coincidence with the hatching of the caterpillars of which it feeds. It is found in various types of habitats, such as grasslands and groves. Active individuals were found mostly during the raining season from May to August.
Perbosc (1839: 261) had incorrectly identified some specimens of this species with Calosoma splendidum (Dejean, 1831), thinking to integrate the original description. For this reason Calosoma aurocinctum is often cited as if it had been proposed by Chaudoir as a replacement for Calosoma splendidum Perbosc, 1839 (nec Dejean 1831). However, Perbosc attributing his Calosoma splendidum to Dejean did not propose a new species.

Calosoma (Calodrepa) aurocinctum
Chaudoir, 1850
Mexique (lectotype)
(Muséum National d'Histoire Naturelle, Paris)
Calosoma (Calodrepa) aurocinctum
Chaudoir, 1850
Mexico: Nuevo Leon, Tamauli pass , 10.V.1971
Calosoma (Calodrepa) aurocinctum
Chaudoir, 1850
Mexico: Nuevo Leon, Tamauli pass , 10.V.1971

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