Arachnologische Mitteilungen 55

Arachnologische Mitteilungen / Arachnology Letters 55: 60-63 Karlsruhe, April 2018 The Canary Islands are an archipelago of volcanic origin lo- cated off northwest Africa, comprising seven major islands: El Hierro, La Palma, La Gomera, Tenerife, Gran Canaria, Fuerteventura and Lanzarote. Their contrasting topography and large temperature and humidity gradients provide major opportunities for speciation in spiders (Carvalho & Cardoso 2010), thus compensating their relatively low richness com- pared to the African and European continents for a very high level of endemism (Cardoso et al. 2010). To date there are 513 spider species recorded, most of them endemisms (65 %) and only 17 introduced (3 %) (Gobierno de Tenerife 2017). The highest richness is reached on the island of Tenerife (278 species) while Lanzarote, with 98 species, harbours the lowest number of spider species (Fig. 1). Some of the factors that influence spider biodiversity on each island are habitat hete- rogeneity, geological age, distance to the continent, area and elevation (Cardoso et al. 2010, Real et al. 1999). Several studies have focused on the spider biodiversity from the Canary Islands, both at taxonomic (e.g., Dimitrov & Ribera 2007, Lissner 2017, Planas & Ribera 2015, Wunder- lich 1987, 1992, 2011), faunistic (e.g., Hepner & Paulus 2009, Hernández-Teixidor et al. 2011, Macías-Hernández et al. 2016) and genetic levels (e.g., Dimitrov et al. 2008, Macías- Hernández et al. 2010, 2013, Opatova & Arnedo 2014).Most of them have been carried out within the families Dysderidae and Pholcidae, which had experienced a huge adaptive radia- tion leading to several endemic species (Arnedo et al. 2001, Dimitrov et al. 2008). However, the real distribution of many species is underestimated, especially in islands and habitats that have been poorly sampled. In this article the known dis- tribution of fifteen species is extended, reporting nine first records for Gran Canaria, four for Tenerife, and three for Fuerteventura (one of them also shared with Gran Canaria). Moreover, Leptodrassus albidus Simon, 1914 and Setaphis car­ meli (O. Pickard-Cambridge, 1872) are reported for the first time for the Canary Islands. Material and methods All specimens were collected by direct sampling and identified by the author from December 2016 to August 2017, except when another collector is specified, and all are stored in absolu- te ethanol in the author’s personal collection. Murphy (2007), Nentwig et al. (2017), Platnick & Murphy (1996) and Wun- derlich (1992) were used as resources to identify the species. Global distribution data were taken from the World Spider Catalog (2017) while current distribution data in the Cana- ry Islands were taken from the Canary Biodiversity DataBase (Gobierno de Canarias 2017).The latter was also consulted to obtain information about insular and local (50 × 50 m squares) spider biodiversity. This tool is the most updated information since the last published check-list (Arechavaleta et al. 2010). Results Family Araneidae Agalenatea redii (Scopoli, 1763) Determination. Nentwig et al. (2017). Gran Canaria: Tenteniguada (Valsequillo), 27.975834°N/ -15.528912°W, 1010 m, 28.XII.2016, 1 ( ; Inagua (Tejeda), 27.932508°N/-15.672725°W, 1060 m, 30.XII.2016, 1 ( ; Montaña de Tara (Telde), 28.003147°N/-15.431478°W, 250 m, 10.III.2017, 1 ( ; Valsendero (Valleseco), 28.031515°N/ -15.600947°W, 1220 m, 11.IV.2017, 1 ( ; Camino de Las Retamillas (Moya), 28.039958°N/-15.606447°W, 1375 m, 11.IV.2017, 1 ( ; Montaña Las Palmas (Telde), 27.998172°N/ -15.454362°W, 530 m, 10.IV.2017, 1 ( . Fuerteventura: Corral de Esquey (Betancuria), 28.449499°N/ -14.031692°W, 290 m, 28.V.2017, 2 (( , Ruymán Cedrés leg. Individuals were found on dry grass and shrubs. Distribution. Europe,Turkey, Central Asia to China. New to Gran Canaria and Fuerteventura. Argiope lobata (Pallas, 1772) Determination. Nentwig et al. (2017). Gran Canaria: Inagua (Tejeda), 27.932508°N/-15.672725°W, 1060 m, 30.XII.2016, 1 ( . The collected specimen was found in a web on dry grass. Distribution. Southern Europe to Central Asia and China, northern Africa, South Africa, Israel, India, from Myanmar to New Caledonia and northern Australia. New to Gran Ca- naria. Argiope trifasciata (Forsskål, 1775) Determination. Nentwig et al. (2017). Fuerteventura: Puerto Lajas (Puerto del Rosario), 28.538297°N/-13.841662°W, 15 m, 27.V.2017, 1 ( , R. Ce- drés leg.; Antigua, 28.423899°N/-14.023818°W, 580 m, 11.VIII.2017, 1 ( . New records of spider species from the Canary Islands (Araneae) Daniel Suárez doi: 10.30963/aramit5511 Abstract : Leptodrassus albidus and Setaphis carmeli are reported for the first time for the Canary Islands, on the islands of Tenerife and Gran Canaria, respectively. Also, another 13 species representing first records for some of the individual Canarian major islands are repor- ted. Habitats of collected specimens are described and global distribution of the species is provided. Keywords : biodiversity, distribution, Macaronesia Zusammenfassung. Neue Spinnennachweise von den Kanarischen Inseln (Araneae). Leptodrassus albidus und Setaphis carmeli wer- den erstmals für die Kanaren, von Teneriffa bzw. Gran Canaria, gemeldet. Weitere 13 Arten wurden neu für einzelne der größeren Inseln der Kanaren erfasst. Die Lebensräume der Funde werden beschrieben und die weltweite Verbreitung der Arten besprochen. Daniel SUÁREZ, Departamento de Biología Animal, Edafología y Geología. Facultad de Ciencias. Universidad de La Laguna. 38206 La Laguna (Tenerife, Spain); E-mail: danielsura94@gmail.com submitted 2.10.2017, accepted 22.3.2018, online 30.4.2018