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Chaltenia patagonica, new genus and species belonging to Chalteniina, a new subtribe of Zolini (Coleoptera: Carabidae)

Published online by Cambridge University Press:  31 May 2012

Sergio Roig-Juñent  and
Armando C. Cicchino
Sergio Roig-Juñent*
Affiliation:
IADIZA, CC 507, 5500 Mendoza, Argentina
Armando C. Cicchino
Affiliation:
Departamento Científico de Entomología, Museo de La Plata, Paseo del Bosque s/n 1900, La Plata, Argentina
*
1 Author to whom all correspondence should be addressed (E-mail: saroig@lab.cricyt.edu.ar).
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Abstract

Based on external structural features and on those of male and female genitalia, the monobasic carabid genus Chalteniagen.nov. is described and illustrated, along with Chaltenia patagonicasp.nov. A parsimony analysis of tribe-level taxa supports a position of this new genus within the supertribe TrecFhitae. Based on the analysis of fittest trees, the genus Chaltenia is most closely related to the tribe Zolini. Several characters, such as head with three supraorbital setae, two rows of squamosetae on ventral surface of male protarsomeres 1–2, elytral interval 8 not carinate, and glossal sclerite quadrisetose, differentiate the genus Chaltenia from the three subtribes of Zolini. Because of the large degree of difference from the previously known genera of Zolini, a new monogeneric subtribe, Chalteniina, is described in order to hold the new genus Chaltenia. The biogeographical pattern exhibited by the tribe Zolini is congruent with the biogeographical patterns of other carabids, such as the tribe Broscini, that show an amphitropical distribution.

Résumé

Le nouveau genre monospécifique Chalteniagen.nov. et l’espèce C. patagonicasp.nov. sont ici proposés et diagnostiqués sur la base des structures externes ainsi que sur les appareils génitaux des mâles et femelles. Une analyse de parsimonie au niveau tribal indique que ce nouveau genre appartient au Trechitae et, selon les caractères synapomorphiques du genre Chaltenia, il est plus proche de la tribu Zolini. Le genre Chaltenia diffère grandement des genres des trois sous-tribus connues de Zolini par quelques caractères notanment comme trois soies frontales supraoculaires, le revêtement ventral du protarsites 1–2 du mâle du type sérié avec deux rangées des phanères, avec strie récurrente, et languette avec quatre soies, en conséquence, une nouvelle tribu, Chalteniina, est crée pour ce genre. Le patron biogéographique montré par la tribu Zolini est congruent avec celui d’autres groupes de Carabidae comme Broscini qui ont une distribution amphitropicale.

Type
Articles
Information
The Canadian Entomologist , Volume 133 , Issue 5 , October 2001 , pp. 651 - 670
Copyright
Copyright © Entomological Society of Canada 2001

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