Anderson, Robert S., 2002, The Dryophthoridae of Costa Rica and Panama: Checklist with keys, new synonymy and descriptions of new species of Cactophagus, Mesocordylus, Metamasius and Rhodobaenus (Coleoptera; Curculionoi, Zootaxa 80, pp. 1-94: 22

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http://doi.org/ 10.5281/zenodo.156033

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Tribe Sphenophorini  Lacordaire

Six genera but over 100 species of this tribe occur in Costa Rica and Panama. They are characterized by the form of the articulation between the femur and tibia which consists of a set of flanges and brackets, lack of a second small apical tibial tooth, sternite 9 is present in males ( Kuschel 1995) and the scutellum is triangular in shape, widest near the base.