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Keywords = Deltochilini

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14 pages, 3765 KB  
Article
Description of Three New Species of the Canthon indigaceus Species Group (Coleoptera: Scarabaeidae: Scarabaeinae)
by Victor Moctezuma, José Luis Sánchez-Huerta, Alejandro Espinosa de los Monteros, Janet Nolasco-Soto and Gonzalo Halffter
Taxonomy 2025, 5(2), 26; https://doi.org/10.3390/taxonomy5020026 - 3 May 2025
Cited by 3 | Viewed by 2235
Abstract
We describe three new species: Canthon mezcalis Moctezuma, Sánchez-Huerta, and Halffter sp. nov. from the Valles Centrales region in Oaxaca, Mexico; Canthon hondurensis Moctezuma and Sánchez-Huerta sp. nov. from Honduras; and Canthon woodruffi Moctezuma and Sánchez-Huerta sp. nov. from Guanacaste, Costa Rica. Through [...] Read more.
We describe three new species: Canthon mezcalis Moctezuma, Sánchez-Huerta, and Halffter sp. nov. from the Valles Centrales region in Oaxaca, Mexico; Canthon hondurensis Moctezuma and Sánchez-Huerta sp. nov. from Honduras; and Canthon woodruffi Moctezuma and Sánchez-Huerta sp. nov. from Guanacaste, Costa Rica. Through the examination of external and genital morphology, Bayesian inference, and genetic distances based on the Kimura two-parameter model of nucleotide substitution, we confidently determined that the C. indigaceus species group is a monophyletic unit, which is integrated by a set of cryptic species. Full article
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14 pages, 4235 KB  
Article
A New Species in the Canthon indigaceus Species Group (Coleoptera: Scarabaeidae: Scarabaeinae) from the Mexican Pacific Coast
by Sara Lariza Rivera-Gasperín, Fernando Escobar-Hernández and Lucrecia Arellano
Taxonomy 2025, 5(1), 11; https://doi.org/10.3390/taxonomy5010011 - 20 Feb 2025
Cited by 5 | Viewed by 2473
Abstract
The Canthon indigaceus species group represents a Typical Neotropical distributional pattern with wide penetration into the Mexican Transition Zone. This group consists of three species: C. (C.) indigaceus LeConte; C. (C.) chiapas Robinson; and C. (C [...] Read more.
The Canthon indigaceus species group represents a Typical Neotropical distributional pattern with wide penetration into the Mexican Transition Zone. This group consists of three species: C. (C.) indigaceus LeConte; C. (C.) chiapas Robinson; and C. (C.) chevrolati Harold. In this study, a new species for the group is described, C. (C.) cuixmala, collected along the tropical region of the Pacific coast and the Balsas River basin. The taxonomic status of members of the group were evaluated by comparing morphological characteristics and their biogeographic distributions. An updated dichotomous key is provided to separate members of this species group. Full article
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13 pages, 27744 KB  
Article
Bajacanthon, a New Subgenus for the Mexican Deltochilini (Coleoptera: Scarabaeidae: Scarabaeinae) Fauna
by Gonzalo Halffter, Alejandro Espinosa de los Monteros, Janet Nolasco-Soto, Alfonsina Arriaga-Jiménez and Sara Rivera-Gasperín
Diversity 2022, 14(2), 109; https://doi.org/10.3390/d14020109 - 3 Feb 2022
Cited by 9 | Viewed by 3083
Abstract
In this study, data are presented for the designation of the new subgenus (Bajacanthon) for Canthon obliquus Horn, 1894 (Deltochilini). The new subgenus Bajacanthon is described based on a multiple evidence approach using morphological and molecular characters. This new subgenus has [...] Read more.
In this study, data are presented for the designation of the new subgenus (Bajacanthon) for Canthon obliquus Horn, 1894 (Deltochilini). The new subgenus Bajacanthon is described based on a multiple evidence approach using morphological and molecular characters. This new subgenus has some unique characters, and is the remnant of an old South American migratory movement into the Mexican Transition Zone. This beetle species has survived in isolation in the south half of the peninsula of Baja California (Mexico). Results based on molecular clock inference showed that the split between the lineages leading to the subgenus Bajacanthon and Boreocanthon took place nearly 16 Mya, whereas the radiation within Bajacanthon was dated to 3.7 Mya. Full article
(This article belongs to the Special Issue Socioecology and Biodiversity Conservation)
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