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Type: Articles
Published: 2012-08-29
Page range: 1–65
Abstract views: 52
PDF downloaded: 2

Revision and phylogenetic analysis of the spider genus Philisca Simon (Araneae: Anyphaenidae, Amaurobioidinae)

Division of Arachnology, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”, Av. Angel Gallardo 470 (C1405DJR), Buenos Aires, Argentina
Division of Arachnology, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”, Av. Angel Gallardo 470 (C1405DJR), Buenos Aires, Argentina
Araneae South America Robinson Crusoe Juan Fernández island biogeography systematics cladistics

Abstract

We review the spider genus Philisca Simon, an endemic of the southern forests in Chile and Argentina, and present aphylogenetic analysis including 15 species, of which five are newly described (P. atrata, P. robinson, P. viernes, P. pizarroiand P. robusta), together with other 98 representatives of the family Anyphaenidae. Four species names are considerednomina dubia (Clubiona gayi Nicolet, Drassus mirandus Nicolet, Clubiona altiformis Nicolet, P. obscura Simon). Cluiliuschilensis Mello-Leitão is newly synonymized with P. accentifera Simon. The phylogenetic analysis resulted in P.puconensis Ramírez branching off basally in the genus, because of its numerous leg spines and unmodified malechelicerae, all plesiomorphic for the group; the remaining species form two clear groups. The first one, formed by P. hahniSimon, P. tripunctata (Nicolet), P. amoena (Simon), P. hyadesi (Simon) and P. doilu (Ramírez), are grouped by the lossof spines on legs I and II. The second, formed by P. huapi Ramírez, P. ingens Berland, P. ornata Berland, P. accentiferaSimon, P. atrata and four new species endemic to the Robinson Crusoe Island in the Juan Fernández Archipelago, havethe male chelicerae, and in most cases also the endites, modified. In total, six species of Philisca are endemic to JuanFernández, but our dataset is not conclusive for the distinction of alternative colonization scenarios. We analyze theevolution of leg macrosetae, and show two independent instances of reduction of spination, one on the continent and another on the Juan Fernández islands.

References

  1. Berland, L. (1924) Araignées de l'ile de Pàques et des iles Juan Fernandez. In The Natural History of Juan Fernandez and Easter Island, 3(3), 419–437.

    Bremer, K. (1994) Branch support and tree stability. Cladistics, 10, 295–304.

    Goloboff, P. (1993) Estimating character weights during tree search. Cladistics, 9, 83–91.

    Goloboff, P.A., Farris, J.S., Källersj, M., Oxelman, B., Ramírez, M.J. & Szumik, C.A. (2003) Improvements to resampling measures of group support. Cladistics, 19, 324–332.

    Goloboff, P.A, Farris, J.S. & Nixon, K.C. (2008a) TNT, a free program for phylogenetic analysis. Cladistics, 24, 774–786.

    Goloboff, P.A., Carpenter, J.M., Arias, J.S., Miranda Esquivel, D.R. (2008b) Weighting against homoplasy improves phylogenetic analysis of morphological data sets. Cladistics, 24, 1–16.

    Lopardo, L. (2005) Phylogenetic revision of the genus Negayan (Araneae, Anyphaenidae, Amaurobioidinae). Zoologica Scripta, 34, 245–277.

    Mello-Leitão, C.F. (1943) Aranhas do Chile colig. p. Dr. J.C. Carbalho. Revista Brasileira de Biologia, 3(4), 403–409.

    Mello-Leitão, C.F. (1951) Arañas de Maullin, colectadas por el ingeniero Rafael Barros V. Revista chilena de historia natural, 51–53, 327–338.

    Nicolet, H. (1849) Arácnidos. In C. Gay, (editor), Historia física y política de Chile Zoología, 3, 319–543. Paris: C. Gay.

    Ramírez, M.J. (1993) Revisión del género Liparotoma Simon, 1884 (Araneae, Anyphaenidae). Boletín de la Sociedad de Biología de Concepción, 64, 195–207.

    Ramírez, M.J. (1995) A phylogenetic analysis of the subfamilies of Anyphaenidae (Arachnida, Araneae). Entomologica Scandinavica, 26, 361–384.

    Ramírez, M.J. (1997) Revisión y filogenia de los géneros Ferrieria y Acanthoceto (Araneae: Anyphaenidae, Amaurobioidinae). Iheringia (Série Zoologia), 82, 173–203.

    Ramírez, M.J. (2003) The spider subfamily Amaurobioidinae (Araneae, Anyphaenidae): a phylogenetic revision at the generic level. Bulletin of the American Museum of Natural History, 277, 1–262.

    Ramírez, M.J. (2007) Homology as a parsimony problem: a dynamic homology approach for morphological data. Cladistics, 23, 588–612.

    Shorthouse, D.P. (2010) SimpleMappr, an online tool to produce publication-quality point maps. Retrieved from http://www.simplemappr.net. Last accessed 2012 March 29.

    Simon, E. (1884) Arachnides recueillis par la Mission du Cap Horn en 1882–1883. Bulletin de la Société Zoologique de France, 9, 117–144.

    Simon, E. (1886) Arachnides recuellis en 1882–1883 dans la Patagonie méridionale, de Santa Cruz à Punta Arena, par M. E. Lebrun, attaché comme naturaliste à la Mission du passage de Vénus. Bulletin de la Société Zoologique de France, 11, 558–577.

    Simon, E. (1887) Arachnides. In Misssion scientifique du Cap Horn, 1882–1883. IV. Zoologie, E1–E42. Paris: Gauthier–Villars.

    Simon, E. (1897) Histoire Naturelle des Araignées, 2, 1–192. Paris: Roret.

    Simon, E. (1902) Arachnoideen, exclu. Acariden und Gonyleptiden. In Ergebnisse der Hamburger Magalhaensische Sammelreise, 6(4), 1–47. Hamburg: L. Friederichsen.

    Simon, E. (1903) Histoire Naturelle des Araignées, 2(4), 669–1080. Paris: Roret.

    Simon, E. (1904) Etude sur les arachnides du Chili recueillis en 1900, 1901 et 1902, par MM. C. Porter, Dr Delfin, Barcey Wilson et Edwards. Bulletin et Annales de la Societe Royale Belge d'Entomologie, 48, 83–114.

    Werenkraut, V. & Ramírez, M.J. (2009) A revision and phylogenetic analysis of the spider genus Coptoprepes Simon (Araneae: Anyphaenidae, Amaurobioidinae). Zootaxa, 2212, 1–40.