Taxonomic revisión of Melanocyphus Jekel (Coleoptera: Curculionidae)

DEL RÍO, M. GUADALUPE; LANTERI, ANALÍA A.

STUDIES ON NEOTROPICAL FAUNA AND ENVIRONMENT

Taylor & Francis

Lugar: Alemania; Año: 2007 vol. 42 p. 127 - 132

0165-0521

Melanocyphus Jekel is a broad-nosed weevil genus (Entiminae: Naupactini) endemic to Colombia, that includes two species, M. bispinus (Boheman) and M. lugubris (Boheman), mainly differentiated by the presence or absence of humeral teeth. Based on characters of the cuticle, vestiture, morphology of the antennae, rostrum, and genitalia Melanocyphus is closely related to Amitrus Schoenherr, a genus distributed in Bolivia and Peru.  Since the type species had not been designated, we proposed Cyphus lugubris (original combination) as type of Melanocyphus.  This contribution includes redescriptions of the genus and its species, a dichotomous key, habitus photographs and illustrations of the diagnostic characters of the external morphology and genitalia.    Keywords: Melanocyphus, Curculionidae, taxonomy, revision.