Taxonomic revision and cladistic analysis of Teratopactus Heller (Coleoptera, Curculionidae)

M. GUADALUPE DEL RÍO; ANALÍA A. LANTERI; JERSON V. C. GUEDES

INVERTEBRATE SYSTEMATICS

CSIRO Publishing

Lugar: Australia; Año: 2006 vol. 20 p. 585 - 602

1445-5226

Teratopactus Heller (Entiminae: Naupactini) is a broad-nosed weevil genus ranging in South America. It includes seven species: T. capucinus (Perty) [type species, syn. T. senex (Boheman)]; T. elegans (Lucas) [comb. nov.]; T. gibbicollis (Boheman); T. nodicollis (Boheman) [syn. T. angulicollis (Lucas), T. paulanus (Fonseca & Autuori), T. serripes (Boheman), and T. perpastus (Boheman), the latter being a new synonymy]; T. retusus (Boheman); T. tuberculatus (Arrow) and T. vittatus (Mannerheim) [comb. nov.]. All species except T. tuberculatus have a strong ovipositor lacking styli; T. elegans, T. nodicollis and T. vittatus show a well developed humeri, bearing a strong tooth; and T. retusus, T. capucinus and T. gibbicollis are characterized by a strongly gibbous pronotum and a reduced humeri. Teratopactus nodicollis is the most variable and widespread species (Argentina, Brazil, Bolivia, Paraguay and Uruguay), T. tuberculatus ranges in Brazil and Paraguay, as does T. elegans, and the remaining species are endemic to Brazil. A parsimony analysis of Teratopactus species plus two outgroups, using 36 morphological characters, yielded a single cladogram with the following topology: (T. tuberculatus ((T. elegans (T. nodicollis-T. vittatus)) (T. retusus (T. capucinus-T. gibbicollis)))). The revision includes a key to species, habitus photographs, drawings of genitalia, maps and a cladogram.