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Faille A.,Zoologische Staatssammlung Munich | Bourdeau C.,5 chemin Fournier Haut | Fresneda J.,Ca de Massa

A molecular phylogeny of the species from the Frechus brucki clade (previously F. uhagoni group) based on fragments of four mitochondrial genes and one nuclear gene is given. We describe Frechus {Frechus} bouilloni sp. n. from the western pre-Pyrenees: Sierras de Urbasa-Andia, Navarra, Spain. The species was collected in mesovoid shallow substratum (mss), a subterranean environment. Molecular as well as morphological evidences demonstrate that the new species belongs to the Frechus brucki clade. A narrow endemic species of high altitude in western French Pyrenees merged with F. brucki Fairmaire, 1862a, F. bruckoides sp. n., is described. A lectotype is designated for F. brucki and F. planiusculus Fairmaire, 1862b (junior synonym of F. brucki). The species group is redefined based on molecular and morphological characters, and renamed as the brucki group, as F. brucki was the first described species of the clade. A unique synapomorphy of the male genitalia, a characteristic secondary sclerotization of the sperm duct, which is shared by all the species of the brucki group sensu novo, is described and illustrated. The T. brucki group sensu novo is composed of Trechus beusti (Schaufuss, 1863), T. bouilloni sp. n., T. brucki, T. bruckoides sp. n., T. grenieri Pandellé, 1867, T. uhagoni uhagoni Crotch, 1869, T. uhagoni ruteri Colas, 1935 and T. pieltaini Jeannel, 1920. We discuss the taxonomy of the group and provide illustrations of structures showing the differences between the species, along with distribution data and biogeographical comments. Arnaud Faille et al© Arnaud Faille et al. Source

Faille A.,Zoologische Staatssammlung Munich | Fresneda J.,Ca de Massa | Bourdeau C.,5 chemin Fournier Haut

Geotrechus sarpedon sp. n., a new species of blind Trechini is described from Arbailles Massif, western Pyrenees, France. The generic attribution of the new species was challenging as it shares morphological features of both genera Geotrechus Jeannel, 1919 and Aphaenops subgenus Hydraphaenops Jeannel, 1926, confirming their polyphyly, which has been highlighted by previous molecular studies on the group. Molecular data suggests unambiguously strong affinities between the new species and the clade Aphaenops vasconicus Jeannel, 1913-A. galani Español, 1968 occurring in the same geographic area, and not related with Aphaenops ehlersi (Abeille de Perrin, 1872), type species of the subgenus Hydraphaenops. The species is included in the paraphyletic genus Geotrechus until its affinities with the other species of Geotrechus and A. (Hydraphaenops) are clarified. © 2013 Magnolia Press. Source

Faille A.,Zoologische Staatssammlung Munich | Bourdeau C.,5 chemin Fournier Haut | Belles X.,University Pompeu Fabra | Fresneda J.,Ca de Massa
Arthropod Systematics and Phylogeny

We present a study of the eastern group of species of the genus Geotrechus (Coleoptera, Carabidae, Trechini), combining molecular and morphological approaches. Four new species are described from caves of the Pyrenees of Catalonia, Spain. Two of the new species belong to the Geotrechus ubachi group sensu novo, like all the species previously known. A new group, the Geotrechus delioti group, is proposed for two new species merged until now with Geotrechus seijasi Español. The molecular study is based on a combination of fragments of four mitochondrial and two nuclear genes. We discuss the distribution of the group and provide a potential scenario of diversification, favouring the hypothesis of allopatric speciation for this old and speciose group of Pyrenean microendemic biota. © 2015 Senckenberg Gesellschaft für Naturforschung. Source

Faille A.,French National Center for Scientific Research | Faille A.,Institute Of Biologia Evolutiva Csic Upf | Ribera I.,Institute Of Biologia Evolutiva Csic Upf | Ribera I.,CSIC - National Museum of Natural Sciences | And 5 more authors.
Molecular Phylogenetics and Evolution

Trechini ground beetles include some of the most spectacular radiations of cave and endogean Coleoptera, but the origin of the subterranean taxa and their typical morphological adaptations (loss of eyes and wings, depigmentation, elongation of body and appendages) have never been studied in a formal phylogenetic framework. We provide here a molecular phylogeny of the Pyrenean subterranean Trechini based on a combination of mitochondrial (cox1, cyb, rrnL, tRNA-Leu, nad1) and nuclear (SSU, LSU) markers of 102 specimens of 90 species. We found all Pyrenean highly modified subterranean taxa to be monophyletic, to the exclusion of all epigean and all subterranean species from other geographical areas (Cantabrian and Iberian mountains, Alps). Within the Pyrenean subterranean clade the three genera (Geotrechus, Aphaenops and Hydraphaenops) were polyphyletic, indicating multiple origins of their special adaptations to different ways of life (endogean, troglobitic or living in deep fissures). Diversification followed a geographical pattern, with two main clades in the western and central-eastern Pyrenees respectively, and several smaller lineages of more restricted range. Based on a Bayesian relaxed-clock approach, and using as an approximation a standard mitochondrial mutation rate of 2.3% MY, we estimate the origin of the subterranean clade at ca. 10 MY. Cladogenetic events in the Pliocene and Pleistocene were almost exclusively within the same geographical area and involving species of the same morphological type. © 2009 Elsevier Inc. All rights reserved. Source

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