Arachnologische Mitteilungen 56

Arachnologische Mitteilungen / Arachnology Letters 56: 17-23 Karlsruhe, September 2018 The spider fauna of the Iberian Peninsula and of the Balearic Islands is relatively well catalogued. Pedro Cardoso presented a preliminary checklist of Portuguese spiders in 2000 (Car- doso 2000). In 2004, Eduardo Morano published a list of re- corded species of Iberian spiders together with a bibliography of available publications on that topic (Morano 2004). This review provided the number of species, Iberian endemics, collecting localities and references for each administrative re- gion of Spain and Portugal. It also revealed the best and worst studied regions of the Iberian Peninsula, and thus outlined promising areas for future investigations. The next stage of synthesis was the creation of an elect- ronic catalogue of the Iberian spiders (Morano & Cardoso in Cardoso & Morano 2010). An accompanying paper pre- sented an updated checklist of spiders with respect to the provinces and a comparative analysis of the records, species and endemic species in each family and province (Cardoso & Morano 2010). The third (and latest) version of the Iberian spider catalogue provided maps of collecting localities and ex- haustive data on the records of 1382 species in 381 genera and 55 families (Morano et al. 2014). Conducting such a huge job, the catalogue authors concluded that the spider fauna of the Iberian Peninsula is still severely incompletely studied. The territory has been unevenly surveyed, there is a shortage in the data on species habitat distribution, and only some families have a sufficient species list (Cardoso & Morano 2010). The Eurasian Dry Grassland Group EDGG (Vrahnakis et al. 2013) organizes research expeditions (so-called Field Workshops) since 2009, aimed at sampling standardized, high-quality data on species composition and diversity of grasslands and related communities (Dengler et al. 2016). Data collection initially focused on plant diversity; the 7 th Field Workshop conducted in the region of Navarre in Spain (Biurrun et al. 2014) was the first example to include inver- tebrate collection, namely spiders, in the sampling protocol. This opened the opportunity to expand information about spiders in the study region and specify their distribution in various types of grasslands. The Iberian spider catalogue includes 539 spider records in the region of Navarre, which correspond to 231 species in 141 genera and 35 families; the 79 collecting localities are documented in 37 papers (Morano et al. 2014). Spider habi- tat distribution in Navarre is known only for 13 cave species (see Morano et al. 2014) and for 149 species from oak and beech-oak forests (Castro & Ferrandez 1998, Castro & Al- berdi 2002, Castro & Barriuso 2004, Castro 2009, Morano et al., 2014). The current paper presents spider records from the 7 th EDGG Field Workshop, thus providing a major supplement to the list of spiders of Navarre, and reports the first data on spider species composition in the dry grasslands of the study region. Material and methods Study area Navarre is a Spanish region located in the north-central part of the Iberian Peninsula, ranging from the Pyrenean Moun- New data on the spider fauna (Araneae) of Navarre, Spain: results from the 7 th EDGG FieldWorkshop Nina Polchaninova, Itziar García-Mijangos, Asun Berastegi, Jürgen Dengler & Idoia Biurrun doi: 10.30963/aramit5603 Abstract. Multi-taxon investigations are of great importance in biodiversity research. We sampled spiders during the 7 th EDGG Field Workshop aimed at studying dry grassland diversity in Navarre, Spain. A total of 99 spider species from 15 families were recorded from 14 localities. Of these, 47 species were new to Navarre. To date, the list of spiders of Navarre accounts for 322 species. During this first dry grassland-specific study of spiders in Spain, 78 species were recorded for the first time in this type of habitat in Navarre, and for 69 species it is a newly recorded habitat in the Iberian Peninsula. The grasslands growing in the submediterranean humid and supramediterranean upper dry territories, belonging to Festuco-Brometea and Festuco-Ononidetea phytosociological classes, were the richest in terms of inhabiting spiders (26 and 23 species respectively) while the communities of mesomediterranean semi-arid area (Lygeo-Stipetea and Salicornietea fruticosae classes) were the poorest (four species each). Keywords: dry grassland, fauna inventory, habitat distribution, Iberian Peninsula, spiders Zusammenfassung. Neue Daten zur Spinnenfauna (Araneae) von Navarra, Spanien: Ergebnisse des 7. EDGG Field Workshop. Multi-Taxon-Untersuchungen sind ein wichtiger Teil der Biodiversitätsforschung. Wir haben im Rahmen des 7 th EDGG Field Workshop trockenes Grünland in der Provinz Navarra (Spanien) untersucht. Insgesamt wurden in 14 Untersuchungsflächen 99 Spinnenarten aus 15 Familien erfasst, darunter waren 47 neu für Navarra. Damit umfasst die Spinnenliste Navarras nun 322 Arten. In dieser ersten Erfas- sung von Spinnen speziell in Grünland in Spanien wurden 78 Arten in Navarra und 69 auf der Iberischen Halbinsel erstmals in diesem Habitattyp erfasst. Grünland in den submediterran feuchten und den oberen supramediterran trockenen Regionen gehört zu den pflan- zensoziologischen Klassen Festuco-Brometea und Festuco-Ononidetea und war am artenreichsten (26 bzw. 23 Spinnenarten). Dagegen waren die Klassen der mesomediterranen semi-ariden Region (Lygeo-Stipetea und Salicornietea fruticosae) die artenärmsten (jeweils vier Spinnenarten). Nina POLCHANINOVA, Department of Zoology and Animal Ecology, V.N. Karazin Kharkiv National University, 4 Maid. Svobody, Kharkiv 61022 Ukraine; E-mail: n.polchaninova@karazin.ua Itziar GARCÍA-MIJANGOS, Department of Plant Biology and Ecology, University of the Basque Country UPV/EHU, P.O. Box 644, Bilbao, Spain; E-mail: itziar.garcia@ehu.es Asun BERASTEGI, Department of Biodiversity, Gestión Ambiental de Navarra, S.A., Padre Adoain 219 Bajo, 31015 Pamplona, Spain; E-mail: aberastg@ganasa.es Jürgen DENGLER, Vegetation Ecology Group, Institute of Natural Resource Sciences (IUNR), Zurich University of Applied Sciences (ZHAW), Grüentalstr. 14, Postfach, 8820 Wädenswil, Switzerland; E-mail: juergen.dengler@zhaw.ch Plant Ecology, Bayreuth Center of Ecology and Environmental Research (BayCEER), University of Bayreuth, Universitätsstr. 30, 95447 Bayreuth, Germany German Centre for Integrative Biodiversity Research (iDiv), Deutscher Platz 5e, 04103 Leipzig, Germany Idoia BIURRUN, Department of Plant Biology and Ecology, University of the Basque Country UPV/EHU, P.O. Box 644, Bilbao, Spain; E-mail: idoia.biurrun@ehu.es submitted 28.3.2018, accepted 22.8.2018, online 6.12.2018