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In size and proportions, this species is similar to Calocosmus chevrolati. It is easily distinguished by having the dark apex of the elytron with a shiny, metallic purple iridescence (black with a matte finish in Calocosmus chevrolati). Also, this apical region has areas lacking pubescence and punctures (densely punctate and pubescent in Calocosmus chevrolati). The metallic elytral apex sometimes has elevated costae making specimens similar to Calocosmus thonalmus and Calocosmus contortus, however, the elytral apex is never contorted to that extreme and lacks the costal pubescent ridges characteristic of those species.
This species is known only from Hispaniola.
New distributional data
Dominican Republic, La Altagracía Province, Parque Nacional del Este, Boca de Yuma, 18°21.508'N, 68°36.956'W, 20 July 2004, N. Woodley, S. Lingafelter (1 specimen, USNM); Dominican Republic, La Vega Province, Parque Nacional Armando Bermudez, km 1–3 along trail west of La Ciénega, 1100 m, 22 June 2005, A. Konstantinov (1 specimen, USNM); Dominican Republic, Santiago Province, Parque Nacional Armando Bermudez, Rio Bao, 1212 m, 10 July 1992, M A. & R. O. Ivie (1 specimen, WIBF); Dominican Republic, La Altagracia Province, Parque del Este, 2.9 km southwest of Boca de Yuma, 18°21.51'N, 68°37.05'W, 11 m, 28 May 2004, C. Young, J. Rawlins, J. Fetzner, C. Nunez, semihumid dry forest, limestone, hand collected, 52114, CMNH 327,105 (1 specimen, CMNH); Dominican Republic, La Vega Province, 4.1 km southwest El Convento, 18°50.37'N, 70°42.48'W, 1730 m, 31 May 2003, J. Rawlins, R. Davidson, C. Young, C. Nuñez, P. Acevedo, dense secondary evergreen forest with pine, hand collected, sample 22242, CMNH 319,721 (1 specimen, CMNH); Dominican Republic, San Cristóbal Province, 10 miles north San Cristóbal, 27 August, 1967, J. C. Schaffner (1 specimen, TAMU); Dominican Republic, La Vega Province, 8 miles west Jayaco, 3 August, 1967, J. C. Schaffner (1 specimen, TAMU).
- Lingafelter, S; 2013: Hispaniolan Hemilophini (Coleoptera, Cerambycidae, Lamiinae) ZooKeys, 258: 53-83. doi