Published December 28, 2018
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A New Species of Cryptocanthon Balthasar (Coleoptera: Scarabaeidae: Scarabaeinae) from the Region of Chimalapas, Oaxaca, Mexico
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Mora-Aguilar, Eder F., Delgado, Leonardo (2018): A New Species of Cryptocanthon Balthasar (Coleoptera: Scarabaeidae: Scarabaeinae) from the Region of Chimalapas, Oaxaca, Mexico. The Coleopterists Bulletin 72 (4): 792-796, DOI: 10.1649/0010-065X-72.4.792, URL: http://dx.doi.org/10.1649/0010-065x-72.4.792
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- urn:lsid:zoobank.org:pub:urn:lsid:zoobank.org:pub:0270C773-64C6-4673-ABF4-27AAB485511A
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- urn:lsid:plazi.org:pub:8A4B0024FF96CE62D446FFCF4E05FF91
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- Figure: 10.5281/zenodo.5385829 (DOI)
- Figure: 10.5281/zenodo.5385833 (DOI)
References
- The species of the New World genus Cryptocanthon Balthasar are small scarabs inhabiting the litter of tropical rainforests and cloud forests from Mexico to Brazil. This genus is recognized from the other genera of Deltochilini by the following combination of characters: eyes located posteriorly on the vertex, being not or slightly visible when the head is fully retracted; clypeus with two to six teeth; and the vertical pygidium (Cook 2002; Vaz-de-Mello et al. 2011).
- The genus was described by Balthasar (1942), who designated Cryptocanthon paradoxus Balthasar as the type species. Howden (1973) described eight species distributed from Mexico to Brazil. Subsequently, Howden (1976) described two additional species from Colombia and Mexico. Howden and Gill (1987) described another two species from Panama and Costa Rica. Cook (2002) was the first author to present a comprehensive revision of the genus, describing 22 additional new species and including a phylogenetic analysis. Finally, Arias and Medina (2014) described three species from Colombia. Currently, Cryptocanthon includes 38 species in four species-groups. The Middle American species-group includes 13 species that share a longitudinal median depression on the pronotum, and a carina on the pronotal hypomeron (Cook 2002). Nine species occur in Mexico, all of them included in this species-group.