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Volume 124 - Supplement S162 - 1992

Contents

Research Article

  • REVIEW OF THE NEW WORLD EYELESS WEEVILS WITH UNCINATE TIBIAE (COLEOPTERA, CURCULIONIDAE; MOLYTINAE, CRYPTORHYNCHINAE, COSSONINAE)

  • Anne T. Howden
  • Published online by Cambridge University Press:
    31 May 2012, pp. 3-76

  • The majority of the species of the New World litter-inhabiting eyeless weevils belong to groups possessing uncinate tibiae: Molytinae, Cryptorhynchinae, and Cossoninae. The remaining species are Raymondionymini (Erirhininae) and are not included in this work.Eight genera and 40 species with uncinate tibiae are diagnosed and keyed. Caecossonus Gilbert (four species) is revised and the following new species are described: C. continuus (Mexico); C. sylvaticus (Belize). Decuanellus Osella (10 species) is revised and the following new species are described: D. bahamensis (Bahama Islands); D. brevicrus (Virgin Islands); D. iviei (Virgin Islands); D. longirostris (Puerto Rico); D. muchmorei (Virgin Islands). The new genus Kuschelaxius is proposed and the type species K. tomentosus (Puerto Rico) is described from Puerto Rico. The new species K. discifer is described from Hispaniola. No new species are described in the remaining genera: Howdeniola Osella (two species, Colombia); Lymantes Schoenherr (five species, central United States, El Salvador); Neotorneuma Hustache (one species, Chile); Pseudoalaocybites Osella (15 species, Cuba, Jamaica, Colombia, and Venezuela); Pseudocaecocossonus Osella (one species, Cuba). There are many undescribed species in Lymantes and Pseudoalaocybites, and problems precluding much-needed revisions of these genera are detailed.New combinations and a new synonymy are as follows: Bordoniola Osella is transferred to Raymondionymini; Howdeniola is transferred to Cossoninae; Caecossonus negreai Osella is transferred to Pseudoalaocybites (Pseudoalaocybites); Pseudoalaocybites (Pseudoalaocybites) venezuelanus Osella is transferred to P. (Croizatius); Pseudoalaocybites (Croizatius) montanus Osella is a junior synonym of P. (C.) latithorax Osella.Both the geological history of the Caribbean and dispersal by overwater rafting influenced the present distribution patterns of Caecossonus and Decuanellus.

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