Abstract
A new species of Pacholenus Schoenherr from southeastern Brazil (Coleoptera, Curculionidae, Molytinae), and new occurrences of species of the genus. Pacholenus monteiroi sp. nov. (type-locality Brazil, Rio de Janeiro state, Carapebus, Parque Nacional da Restinga de Jurubatiba) is described and illustrated. The weevil develops as a stem gall-former in Calyptranthes brasiliensis Spreng (Myrtaceae). The new species is easily distinguished from the other five known of the genus by the presence of a prominent supra-ocular ridge. An updated key for identification for all species of Pacholenus is provided. Three species of Pacholenus are presently recorded for the states of Rio de Janeiro and São Paulo; P. pelliceus and P. monteiroi occur in both states, while P. penicillus is only known from Rio de Janeiro; P. hispidus occurs in São Paulo, being the most widespread species of the genus, ranging from Minas Gerais south to Santa Catarina.
Highlights
During researches conducted by Dr Ricardo F
The reared adults were sent by Dr Monteiro to me for identification and I could confirm they belong to a new species of Pacholenus, described
Pacholenus became an available name only when the genus was described by Schoenherr (1836:101) and two species of the genus, P. pelliceus and P. penicillus, were described by Boheman (1836:101 and 102, respectively)
Summary
During researches conducted by Dr Ricardo F. Monteiro and his team (Departamento de Ecologia, Universidade Federal do Rio de Janeiro, UFRJ) in Restinga of Jurubatiba, Rio de Janeiro state, Brazil, some weevils of the genus Pacholenus Schoenherr, 1826 were reared from Calyptranthes brasiliensis Spreng (Myrtaceae) stem galls. Since the revision of the Pacholenini by Vanin & Reichardt (1976), no other new species of Pacholenus had been described.
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