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DIGITAL.CSIC
Article . 2018 . Peer-reviewed
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Sur le genre Oxytrechus Jeannel, 1927, avec la description de nouvelles especes de l'equateur et de la Colombie (Coleoptera, Carabidae, Trechinae)

Authors: Mateu, J.;

Sur le genre Oxytrechus Jeannel, 1927, avec la description de nouvelles especes de l'equateur et de la Colombie (Coleoptera, Carabidae, Trechinae)

Abstract

[FR] L'auteur présente une mise à jour du genre Oxytrechus Jeannel, 1927, gráce à l'étude du matériel appartenant au Centre de Recherches Biosystématiques d'Ottawa (Canada) et aux récoltes en Equateur de M. Pierre Moret, de Paris. Le genre va s'enrichir avec neuf espèces nouvelles, 6 de la Colombie et 3 de l'Equateur, qui, s'ajoutant aux autres espèces déjà connues, nous donnent le chiffre de 20 espèces cataloguées jusqu'à maintenant. Les noms des nouveaux taxa sont: O. caucaensis, O. solitarius, O. silvianus, O. bousqueti, O. campbelli, O. jeanneli spp. n., tous de la Colombie; O. globosus, O. guaguanus et O. convexus spp. n. de l'Equateur. Ces 20 espèces se distribuent ainsi: 10 espèces de l'Equateur, 7 de la Colombie, 1 du Pérou, 1 du Chili et, enfin, 1 espèce de l'Argentine et de l'Uruguay, qui est la plus méridionale du genre. Le groupe est très homogène et les espèces différent spécialement par les caractères édéagiens. Les différences de la morphologie sont faibles et fluctuantes. Néanmoins, l'auteur publie dans son étude deux tableaux dichotomiques pour la détermination des Oxytrechus: l'un basé sur la morphologie et l'autre basé uniquement sur les caractères de l'édéage. Toutes les espèces, excepté O. arechavaletai (Putzeys) et O. fasciger (Putzeys), ont été capturées sur le «páramo» andin à des altitudes comprises entre 3.200 et 4.800 m.

[EN] The author updates the knowledge on the genus Oxytrechus Jeannel, 1927, as a result of the study of the material belonging to the Biosystematic Research Centre of Ottawa (Canada), and also to the collections in Ecuador by Pierre Moret from Paris. This genus of Carabidae increases now with nine new species from Colombia and Ecuador which, added to the previously described give a whole of twenty species presently known. The new species are: O. caucaensis, O. solitarius, O. silvianus, O. bousqueti, O. campbelli, O. jeanneli spp. n., all of them from Colombia, and O. globosas, O. guaguanus and O. convexus spp. n. from Ecuador. The species of Oxytrechus are distributed as follows: 10 species from Ecuador, 7 from Colombia, 1 from Peru, 1 from Chile and 1 from Uruguay-Argentina, which is then the most meridional one. The group is quite homogeneous, and the species differ specially by the characters of the aedeagus. The differences concerning the external morphology are rather weak. Therefore, two keys for species identification are provided: one based on the external morphology, and the other on the characters of the aedeagus. Almost all the species (excepting O. arechavaletai (Putzeys), from Uruguay, and O. fasciger (Putzeys), from Peru) were collected on the Andes «páramo» at altitudes between 3,200 and 4,800 m. a.s.l.

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Spain
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Keywords

Coleoptera, Trechinae, Oxytrechus, New taxon, Nuevo taxon, Carabidae

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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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