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Zootaxa, Araneae, Pholcidae

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Zootaxa, Araneae, Pholcidae Zootaxa 982: 1–13 (2005) ISSN 1175-5326 (print edition) www.mapress.com/zootaxa/ ZOOTAXA 982 Copyright © 2005 Magnolia Press ISSN 1175-5334 (online edition) Description of Ossinissa, a new pholcid genus from the Canary Islands (Araneae: Pholcidae) DIMITAR DIMITROV & CARLES RIBERA Departament de Biologia Animal, Universitat de Barcelona, Av. Diagonal, 645, Barcelona - 08028, Spain; [email protected], [email protected] Abstract Ossinissa new genus (Araneae, Pholcidae) is described to place a Canarian pholcid species for- merly considered belonging to Spermophorides. The male of the type species, Ossinissa justoi (Wunderlich) new combination, is described for the first time and the female is re-described. This new genus is supported by a revision of the morphological characters of the female, the newly dis- covered male, and a cladistic analysis. Key words: spiders, pholcids, new genus, taxonomy, Canaries, El Hierro Introduction The Canary archipelago includes seven islands and various islets of volcanic origin situ- ated between 100 and 550 kilometers off the northwest coast of Africa. The proximity to this continent facilitates colonization by North African species. The numerous coloniza- tion episodes and the high diversity of habitats, ranging from arid lowlands to humid sub- tropical forests and alpine zones, offer optimum conditions for the diversification of local fauna. Consequently, the biodiversity of the flora and fauna of the archipelago is high and includes many endemic species and even endemic genera. Spiders (Araneae) are an impor- tant component of this high endemism. The pholcids are one of the spider families with highest diversity in the Canary Islands (Wunderlich 1987, 1992; Dimitrov & Ribera, in press). With few exceptions, such as Phol- cus phalangioides and Spermophora senoculata, all species in the archipelago are endemic. Except for S. senoculata, all belong to only two genera: Pholcus and Spermo- phorides. The first record of a Canarian pholcid dates from the end of the 19th century, when P. ornatus Bösenberg 1895 was described. Thereafter, no new species was recorded until the description of P. go m e ra e by Wunderlich in 1980. After Wunderlich’s work, Accepted by P. Jäger: 4 May 2005; published: 19 May 2005 1.
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