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This species, like Calocosmus janus, Calocosmus punctatus, and Calocosmus semimarginatus, typically has nearly completely black elytra. It is immediately distinguished from Calocosmus janus and Calocosmus punctatus by its slender form, without projecting humeri, and small size, less than 8 mm long (more than 10 mm long and much broader in Calocosmus janus and Calocosmus punctatus). Chevrolat (1862), in his original description, indicates that Calocosmus nigripennis can be recognized by having the pronotum transversely bisulcate, although this feature is less pronounced in the Haiti specimen than in the holotype.
This species, previously known only from Cuba, is now recorded from Haiti (new country and island record). Other specimens examined from Cuba, while similar in most other features, have the elytral base varying from all black to pale orange. Additional material is needed to fully understand the level of variation of this species.
New distributional data
Haiti, Ouest Department, Kenscoff, 1200 m, May 25, 1984, M. Thomas (1 specimen, FSCA).
- Lingafelter, S; 2013: Hispaniolan Hemilophini (Coleoptera, Cerambycidae, Lamiinae) ZooKeys, 258: 53-83. doi
- Chevrolat L (1862) Coléoptères de l’Ile de Cuba. Notes, synonymies et descriptions d’espèces nouvelles. Familles des cérambycides et des parandrides. Annales Société Entomologique de France (4)2: 245–280.