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Ann. soc. entomol. Fr. (n.s.), 2011, 47 (1–2) : 21-32 ARTICLE Taxonomic notes on Trechini and description of a new hypogean species from the Iberian Peninsula (Coleoptera: Carabidae: Trechinae) Vicente M. Ortuño (1) & Alberto Jiménez-Valverde (2) (1) Departamento de Zoología y Antropología Física. Facultad de Biología, Universidad de Alcalá, E-28871 - Alcalá de Henares. Madrid, Spain (2) Natural History Museum and Biodiversity Research Center, Th e University of Kansas, Lawrence, Kansas 66045, USA Abstract. In this contribution, a new pubescent Trechus species for the Iberian Peninsula is described, and the use of some morphological traits in the systematic of Trechini are discussed. Micropubescence is common in endogean and troglobite species which are closely related with the “terrestrial-phreatic habitat”. It probably enhances survival in swampy environments through the retention of air bubbles in immersion conditions and promoting fl otation. Neither this trait, anophthalmy nor inner sac of aedeagus without sclerotized pieces can be used to support supraspecifi c taxa. Thus, we propose the formal synonymy of Hydrotrechus with Trechus [Hydrotrechus syn. nov. of Trechus]. To avoid secondary homonymy, we propose the name Trechus triamicorum nom. nov. for Hydrotrechus cantabricus Carabajal, García & Rodríguez 1999 [already occupied by Trechus cantabricus Jeannel 1927, synonym of Trechus distigma Kiesenwetter 1851]. We also propose the synonymization of the subgenus Trichapoduvalius with Apoduvalius [Trichapoduvalius syn. nov. of Apoduvalius]. The new hypogean species with pubescent elytra, Trechus cifrianae sp. nov., is described. The morphology of the species suggests that it probably inhabits the Mesovoid Shallow Substratum (MSS) or the fi ssure network (mesocaverns and microcaverns) of the cave where the only individual was found. The structure of internal female genitalia suggests a close relationship between T. cifrianae sp. nov. and T. carrilloi Toribio & Rodríguez 1997. Résumé. Notes taxonomiques sur les Trechini et description d’une nouvelle espèce hypogée de la Péninsule Ibérique (Coleoptera : Carabidae : Trechinae). Dans cette contribution, une nouvelle espèce pubescente de Trechus est décrite de la Péninsule Ibérique, tandis que l’utilisation de certains caractères morphologiques de la tribu des Trechini est discutée. La micropubescence est fréquente chez les espèces endogées et troglobies ce qui est à mettre en relation avec l’habitat “terrestre- phréatique”. Ce caractère augmente probablement la survie dans les envirronnements marécageux du fait de la rétention des bulles d’air en immersion qui améliorent la fl ottaison. Ni ce trait, ni l’anophtalmie, ni le sac interne des édéages sans pièce sclérifi ée ne peuvent être utilisés pour caractériser les taxons supraspécifi ques. Dès lors, nous proposons de mettre en synonymie Hydrotrechus avec Trechus [Hydrotrechus syn. nov. of Trechus]. Pour éviter les homonymies secondaires, nous proposons le nom Trechus triamicorum nom. nov. pour Hydrotrechus cantabricus Carabajal, García & Rodríguez 1999 [préoccupé par Trechus cantabricus Jeannel 1927, synonyme de Trechus distigma Kiesenwetter 1851]. Nous proposons aussi la mise en synonymie du sous-genre Trichapoduvalius avec Apoduvalius [Trichapoduvalius syn. nov. de Apoduvalius]. Une nouvelle espèce hypogée à élytres pubescents est décrite : Trechus cifrianae sp. nov. La morphologie de cette espèce suggère qu’elle habite probablement le “Mesovoid Shallow Substratum” (MSS) ou les réseaux de fi ssures (mésocavernes et microcavernes) de la cave d’où le seul spécimen connu provient. La structure des génitalia internes femelles suggère une relation étroite entre T. cifrianae sp. nov. et T. carrilloi Toribio & Rodríguez 1997. Keywords: Taxonomy, Systematic, Coleoptera, Carabidae, Iberian Peninsula. arabidae are extremely diversifi ed coleoptera in- dwell these aphotic and moist habitats, playing an im- Chabiting almost all terrestrial ecosystems (Lövei portant role in the equilibrium of subterranean eco- & Sunderland 1996). Subterranean endogean cham- systems. Th e subfamilies Pterostichinae and, mainly, bers, hypogean environments (Mesovoid Shallow Sub- Trechinae, contain the lineages with the greatest di- stratum – MSS – and bedrock fi ssure network) and the versifi cation in hypogean habitats, exhibiting notice- transitional zone are among the cryptic habitats where able morphological and physiological adaptations (see Casale et al. 1998). Trechinae contains lineages that this beetle family is well represented (Ortuño 2002). have suff ered an intense troglobiomorphy evolution Carabids showing predatory and scavenger behaviours (Dethier & Hubart 2005) and, so, they have a body shape that lies far from the epigean archetype. Th is results in the so called “aphaenopsian” morphology, E-mail: [email protected], [email protected] i.e., depigmented, anophthalmic and graceful mor- Accepté le 31 mai 2010 photypes, with a tendency to show false physiogastry 21 V. M. Ortuño & A. Jiménez-Valverde (pseudophysiogastry: Dethier & Hubart 2005), long some of them closely related to Aphaenops as, for ex- appendages and a high number of sensory receptors. ample, Hydraphaenops Jeannel 1926. It is also present Th is morphology takes the name from the genus in Asiatic hypogean species from several genera and, Aphaenops Bonvouloir 1861, where the most genu- less frequently, in species from America and Oceania ine representatives are included. Th is corporal shape (see Casale et al. 1998). Until now, Trechini stylization is exhibited by many hypogean Trechini in Europe, shows the maximum exponent in the hypogean species Table 1. Examined material. Phyletic series Genus - species (sensu Casale et al. 1998) Trechus Clairville 1806 (57 studied species): T. fulvus Dejean 1831; T. lallemantii Fairmaire 1859; T. alicantinus Español 1971; T. martinezi Jeannel 1927; T. beltrani Toribio 1990; T. torressalai Ortuño & Arillo 2005; T. breuili Jeannel 1913; T. pisuenensis Ortuño & Toribio 2005; T. barratxinai Español 1971; T. diecki Putzeys 1870; T. escalerai Abeille 1903; T. gloriensis Jeanne 1971; T. apoduvalipenis Salgado & Ortuño 1998; T. saxicola Putzeys 1870; T. beusti (Schaufuss 1863); T. pieltaini Jeannel 1920; T. pecignai Toribio 1992; T. arribasi Jeanne 1988; T. carrilloi Toribio & Rodríguez 1997; T. distinctus Fairmaire & Laboulbène 1854; T. pyrenaeus Dejean 1831; T. latebricola Kiesenwetter 1850; T. sharpi Jeannel 1921; T. bordei Peyerimhoff 1909; T. jeannei Sciaky 1998; T. planipennis Rosenhauer 1856; T. kricheldorffi Wagner 1913; T. grenieri Pandellé 1867; T. suturalis Putzeys 1870; T. distigma Kiesenwetter 1851; T. ceballosi Mateu 1953; T. barnevillei Pandellé 1867; T. tingitanus Putzeys 1870; T. cuniculorum Méquignon 1921; T. schaufussi Putzeys 1870; T. “Trechus” quadristriatus (Schrank 1781); T. obtusus Erichson 1837; T. fl avocircumdatus Jeannel 1922; T. fl avocinctus Jeannel 1922; T. fl avolimbatus Wollaston 1863; T. minioculatus Machado 1987; T. umbricola Wollaston 1854; T. picoensis Machado 1988; T. terceiranus Machado 1988; T. longobardus Putzeys 1870; T. brembanus Focarile 1949; T. insubricus K. Daniel & J. Daniel 1898; T. magistrettii Focarile 1949; T. priapus K. Daniel 1902; T. amplicollis Fairmaire 1859; T. putzeysi Pandellé 1867; T. varendorffi Sainte-Claire Deville 1903; T. gracilitarsis K. Daniel & J. Daniel 1898; T. cardioderus Putzeys 1870; T. longulus K. Daniel & J. Daniel 1898; T. marginalis Schaum 1862; T. (Epaphius) secalis (Paykull 1790) Anchotrechus Jeannel 1927 (monobasic genus): A. punctipennis Jeannel 1927 Hydrotrechus Carabajal, García & Rodríguez 1999 (monobasic genus): H. cantabricus Carabajal, García & Rodríguez 1999 Geotrechus Jeannel 1919 (1 studied species): G. orpheus (Dieck 1869) Aphaenops Bonvouloir 1861 (5 studied species): A. jeanneli (Abeille 1905); A. ochsi L. Gaudin 1925; A. leschenaulti Bonvouloir 1862; A. orionis Fagniez 1913; A. (Cerbaphaenops) cerberus (Dieck 1869) Hydraphaenops Jeannel 1926 (1 studied species): H. vasconicus (Jeannel 1913) Paraphaenops Jeannel 1916 (monobasic genus): P. breuilianus (Jeannel 1916) “Aphaenops” Sardaphaenops Cerruti & Henrot 1956 (1 studied species): S. supramontanus Cerruti & Henrot 1956 Doderotrechus Vigna Taglianti 1968 (1 studied species): D. ghilianii (Fairmaire 1859) Boldoriella Jeannel 1928 (1 studied species): B. carminatii (Dodero 1917) Apoduvalius Jeannel 1953 (5 studied species): A. leonensis Salgado & Ortuño 1998; A. alberichae Español 1971; A. naloni Salgado 1993; A. champagnati Salgado 1991; A. anseriformis Salgado & Peláez 2004 “Iberotrechus” Iberotrechus Jeannel 1920 (monobasic genus): I. bolivari (Jeannel 1913) “Trechoblemus” Trechoblemus Ganglbauer 1891 (1 studied species): T. micros (Herbst 1784) Duvalius Delarouzée 1859 “Duvalius” (7 studied species): D. casellii (Gestro 1898); D. brucki (Piccioli 1870); D. carantii (Sella 1874); D. taygetanus Casale 1979; D. comottii Casale, Giachino, Vailati & Vigna Taglianti 1966; D. berthae (Jeannel 1910); D. lencinai Mateu & Ortuño 2006 “Pheggomisetes” Pheggomisetes Knirsch 1923 (1 studied species): P. buresi (Knirsch 1923) Neotrechus J. Müller 1913 (1 studied species): N. suturalis (Schaufuss 1864) “Neotrechus” Orotrechus J. Müller 1913 (1 studied species): O. muellerianus (Schatzmayr 1907); O. vicentinus (Gestro 1907) “Typhlotrechus” Typhlotrechus J. Müller 1913 (1 studied species): T. bilimeki (Sturm 1847) 22 Taxonomic notes on Trechini and a new species Giraff aphaenops clarkei Deuve 2002, from southern Results China (Deuve 2002).