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Issue: Vol. 1053 No. 1: 23 Sep. 2005
Type: Articles
Published: 2005-09-23
DOI: 10.11646/zootaxa.1053.1.1
Page range: 1–21
Abstract views: 90
PDF downloaded: 5

A cladistic analysis of the genera of the tribe Entimini (Coleoptera, Curculionidae), with description of a new genus and species from the Amazonian Region

Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo, Caixa Postal 11461, 05422-970 São Paulo, SP, Brazil
Museu de Zoologia, Universidade de São Paulo, Caixa Postal 42594, 04299–970 São Paulo, SP, Brazil
Coleoptera Cladogram Entimini Nasocomptus gen. nov. N. obyberaba sp. nov. weevils

Abstract

A new genus and species of the weevil tribe Entimini, Nasocomptus obyberaba gen. nov. and sp. nov., are described from the southwestern Amazonian Region (type locality: Brazil, Rondonia, Ouro Preto do Oeste). A cladistic analysis was carried out among representative species of most of the Neotropical genera, including Nasocomptus gen. nov., to provide a phylogenetic hypothesis for the tribe. A single most parsimonious cladogram was obtained: (Entimus (Nasocomptus ((Polyteles, Phaedropus) (Rhigus, Cydianerus)))). An identification key for the genera of Neotropical Entimini (except Trachyus) is furnished. The new genus is easily distinguished by two outstanding autapomorphies: anterior angle of rostrum prominent and spiked in males, and styli of female coxites ventral and pre-apical. Color photographs of the habitus of the new species and outline illustrations of structures used in the cladistic analysis are presented.

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