The genus Tomarus Erichson (Coleoptera: Scarabaeidae: Dynastinae: Pentodontini) in Argentina, Chile, and Uruguay.
2017
The eight species in the genus Tomarus Erichson (Coleoptera: Scarabaeidae) in Argentina, Chile, and Uruguay are reviewed. Tomarus roigjunenti new species and Tomarus spinipenis new species are described from Argentina. We include a key to species, representative habitus illustrations for all species, character illustrations, and distribution maps for each, as well as commentary about the natural history and distributions for each species. Diagnostic characters are discussed for each species, and species relationships are hypothesized based on the analysis of internal and external morphological characters. The male of T. bidentulus (Fairmaire) is described for first time. The following taxonomic changes are made: Tomarus guianucai Dechambre and Lumaret, 1985 is a new junior synonym of Tomarus rubripes (Boheman, 1858), which was formerly and incorrectly cited as occurring in Argentina. Las ochos especies en el genero Tomarus Erichson (Coleoptera: Scarabaeidae) son revisadas para Argentina, Chile y Uruguay. Tomarus roigjunenti especie nueva y Tomarus spinipenis especie nueva de Argentina son descritas como nuevas. Una clave para las especies, se presentan habitus para todas las especies, ilustracion de los caracteres para cada una de las especies, como tambien comentarios acerca de la historia natural y mapas de distribucion para cada especie. Caracteres diagnostico son proveido para cada especie, y las relaciones entre las especies es discutida basado en el analisis de caracteres de la morfologia interna y externa. Se describio por primera vez el macho de T. bidentulus (Fairmaire). El siguiente cambio taxonomico es realizado: Tomarus guianucai Dechambre and Lumaret, 1985 es una nueva sinonimia junior de Tomarus rubripes (Boheman, 1858).
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