Arthropoda Selecta 20(4): 319322 © ARTHROPODA SELECTA, 2011 On the spider fauna of Bolshoy Aynov Island (Barents Sea) (Arachnida: Aranei) Ê ôàóíå ïàóêîâ îñòðîâà Áîëüøîé Àéíîâ (Áàðåíöåâî ìîðå) (Arachnida: Aranei) Anna A. Nekhaeva1 & Ivan O. Nekhaev2 À.À. Íåõàåâà1, È.Î. Íåõàåâ2 1 Institute for Problems of Ecology and Evolution, Russian Academy of Sciences, Leninsky pr. 33, Moscow 119071 Russia. E-mail: [email protected] Èíñòèòóò ïðîáëåì ýêîëîãèè è ýâîëþöèè ÐÀÍ, Ëåíèíñêèé ïð. 33, Ìîñêâà 119071 Ðîññèÿ. 2 Murmansk Marine Biological Institute, Kola Science Centre, Russian Academy of Sciences, Vladimirskaya str. 17, Murmansk 183008 Russia. E-mail: [email protected] Ìóðìàíñêèé ìîðñêîé áèîëîãè÷åñêèé èíñòèòóò ÊÍÖ ÐÀÍ, óë. Âëàäèìèðñêàÿ 17, Ìóðìàíñê 183008 Ðîññèÿ. KEY WORDS: Spiders, Kola Peninsula, tundra, island fauna. ÊËÞ×ÅÂÛÅ ÑËÎÂÀ: Ïàóêè, Êîëüñêèé ïîëóîñòðîâ, òóíäðà, îñòðîâíàÿ ôàóíà. ABSTRACT. An annotated list of 17 spider species part of Barents Sea. The Island is about 2 km long and of 4 families based on personal collecting from Bolshoy represents a flat plain with the extensive boggy depres- Aynov Island (Varangerfjord, Barents Sea) is presented. sion and numerous lakes in its SE part. Savignia frontata Blackwall, 1833 is recorded from The studied area belongs to the Kola subprovince the tundra zone of Kola Peninsula for the first time. of the southern subarctic tundra [Aleksandrova, 1977], which is characterized by poor development of lichen ÐÅÇÞÌÅ. Ïðèâåäåí àííîòèðîâàííûé ñïèñîê ïà- and widespread undershrub communities alternated with óêîâ îñòðîâà Áîëüøîé Àéíîâ (Âàðàíãåð-ôüîðä, Áà- swamps, peatbogs and anthropogenic meadows [Be- ðåíöåâî ìîðå), ñîñòàâëåííûé íà îñíîâå ñîáñòâåí- reslina, 1987]. The island has no permanent human íûõ ñáîðîâ, è âêëþ÷àþùèé 17 âèäîâ èç 4 ñåìåéñòâ. population, but rather a seasonal research station and Savignia frontata Blackwall, 1833 âïåðâûå îòìå÷åí lighthouse. äëÿ ôàóíû ïàóêîâ òóíäðîâîé çîíû Êîëüñêîãî ï-îâà. The material was collected from 12 localities (Fig. 2) during the period of 26 May 26 June 2008 by Introduction pitfall traps (with 70% ethanol), soil sampling and hand collecting. Details of the collecting localities are Spider fauna of the Kola Peninsula is well docu- as follows: mented by Tanasevitch, Rybalov [2010] and Ta- 1. Meadow near the seashore, with Carex spp., nasevitch, Kamayev [2011], whereas that of coastal Anthriscus silvestris, Angelica archangelica, dried islands is poorly known. Only two spider species grass, woody debris (69°49,964'N, 31°34,059'E); pit- Bolyphantes luteolus (Blackwall, 1833) and Pardosa fall traps under drift wood. 2. Meadow with stands of Anthriscus sp. and An- palustris (Linnaeus, 1758) have been recorded by gelica sp. (69°50,087'N, 31°33,807'E); pitfall trap in Fedotov [1912] and Vasilyeva, Nekhaev [2009] from dried grass and woody debris. Bolshoy Aynov Island. Limited information on the spi- 3. Wetland with Salix sp. stands (69°50,149'N, ders of adjacent Arctic territories of Norway was pro- 31°33,810'E); pitfall trap in woody debris and dried vided by Aakra et al. [2000]. grass. This study is based on a small spider collection 4. Undershrub tundra, with Empetrum hermaphro- made by the second author on Bolshoy Aynov Island in ditum near lighthouse (69°50,280' N, 31°33,798' E); 2008. The material is temporally stored in the personal pitfall trap in Polytrichum sp. authors' collection and will be passed in the Zoological 5. Meadow with Anthriscus sp. and Angelica sp., Museum of the Moscow State University, Moscow. near bathhouse. 6. Anthropogenic meadow near the lighthouse. Study area, material and methods 7. Microdepression on slope with ferns, Rumex sp. and Empetrum hermaphroditum, near the lighthouse. Bolshoy Aynov Island (Fig. 1) is situated in Varang- 8. A well, from water surface. erfjord, 5 km west of the Sredniy Peninsula, the SW 9. Indoor. 320 A.A. Nekhaeva & I.O. Nekhaev Fig. 1. Geographic location of Bolshoy Aynov Island. Ðèñ. 1. Ìåñòîðàñïîëîæåíèå î-âà Áîëüøîé Àéíîâ. 10. Peatbog, among dried grass and young spears (69°50,104' N, 31°34,021' E). 11. Microdepression on slope with ferns, Rumex sp. and Empetrum hermaphroditum. 12. Meadow with Chamaepericlymenum suecicum, Rubus chamaemorus, Rumex sp. and Empetrum hermaphroditum. In the following text, numbers in square brackets correspond to the aforementioned localities. Distribu- tional species patterns follow Tanasevitch, Kamayev [2011]. List of spiders Fam. LINYPHIIDAE (14) Bathyphantes gracilis (Blackwall, 1841) MATERIAL. 1 $ [1], 69.VI.2008; 2 $$, 1 #, same locality, 1315.VI.2008; 1 $, same locality, 1517.VI.2008; 1 $ [2], 15 17.VI.2008; 1 $, 1 #, same locality, 1720.VI.2008; 1 $ [3], 24 26.VI.2008. RANGE. Holarctic polyzonal. Bolyphantes luteolus (Blackwall, 1833) Bolyphantes luteolus. Fedotov, 1912: 461. MATERIAL. 1 $ [1], 2931.V.2008. Fig. 2. Map of Bolshoy Aynov Island with collecting localities. COMMENTS. This is one of the northernmost Ðèñ. 2. Êàðòà î-âà Áîëüøîé Àéíîâ è òî÷êè ñáîðîâ. records of the species. On the spider fauna of Bolshoy Aynov Island (Barents Sea) (Arachnida: Aranei) 321 RANGE. Palaearctic boreo-nemoral. Walckenaeria cuspidata Blackwall, 1833 MATERIAL. 1 $ [8], 15.VI.08. Centromerus arcanus (O.Pickard-Cambridge, 1873) COMMENTS. This is one of the northernmost MATERIAL. 1 # [1], 1517.VI.2008; 2 ## [5], 2425.VI.2008. records of the species. COMMENTS. This is the northernmost record of RANGE. Holarctic polyzonal. the species. RANGE. Palaearctic polyzonal. Walckenaeria kochi (O. Pickard-Cambridge, 1872) MATERIAL. 1 $ [8], 15.VI.08; 1 $ [02], 1720.VI.2008. Hilaira herniosa (Thorell, 1875) COMMENTS. This is one of the northernmost MATERIAL. 2 $$, 1 # [2], 31.V2.VI.2008; 1 $ [3], 13 records of the species. 15.VI.2008. RANGE. Palaearctic boreo-nemoral. RANGE. Holarctic boreal. Fam. LYCOSIDAE (1) Hypomma bituberculatum (Wider, 1834) MATERIAL. 2 ## [4], 911.VI.2008; 1 #, same, 15 17.VI.2008; 2 $$, same locality, 1720.VI.2008; 2 $$, same locality, Pardosa palustris (Linnaeus, 1758) 2022.VI.2008; 2 $$, same locality, 2425.VI.2008; 1 # [6], 17 Lycosa tarsalis. Fedotov, 1912: 468. 20.VI.2008; 3 $$, same locality, 2425.VI.2008. Pardosa palustris. Vasilyeva, Nekhaev, 2009: 3334. RANGE. Palaearctic polyzonal. MATERIAL. 1 # [6], 1720.VI.2008; 7 $$, 3 ##, same locality, 2425.VI.2008; 2 $$, 3 ## [3], 2022.VI.2008; 2 ## [4], 2022.VI.2008; 4 $$, 2 ##, same locality, 2425.VI.2008; 1 Micrargus herbigradus (Blackwall, 1854) $, 6 ## [7], 2425.VI.2008. MATERIAL. 1 $ [2], 911.VI.2008; 1 #, same locality, 17 RANGE. Holarctic polyzonal. 20.VI.2008. COMMENTS. This is the northernmost record of the species. Fam. THERIDIIDAE (1) RANGE. Palaearctic boreo-nemoral. Steatoda bipunctata (Linnaeus, 1758) Oedothorax retusus (Westring, 1851) MATERIAL. 2 $$ [9], 15.VI.08. RANGE. Holarctic. MATERIAL. 1 $ [4], 46.VI.2008; 2 $$, same locality, 13 15.VI.2008; 1 $, same locality, 1517.VI.2008; 1 $ [6], 17 20.VI.2008; 2 $$, same locality, 2022.VI.2008; 3 $$, 1 #, same Fam. THOMISIDAE (1) locality, 2425.VI.2008. RANGE. Palaearctic polyzonal. Ozyptila trux (Blackwall, 1846) MATERIAL. 1 # [4], 2425.VI.2008. Oreonetides vaginatus (Thorell, 1872) RANGE. Palaearctic polyzonal. MATERIAL. 1 # [1], 69.VI.2008; 1 #, same, 1113.VI.2008; 1 #, same, 1720.VI.2008. RANGE. Holarctic boreal. Discussion Oryphantes angulatus (O.Pickard-Cambridge, 1881) The studied material from Bolshoy Aynov Island MATERIAL. 1 # [2], 46.VI.2008; 2 $$, same locality, 13 15.VI.2008; 1 $, 1 #, same locality, 1517.VI.2008; 1 # [6], 24 comprise of 95 adult specimens belonging to 17 spider 25.VI.2008. species of 4 families. Two species, Pardosa palustris COMMENTS. This is one of the northernmost and Bolyphantes luteolus, were earlier recorded from records of the species. the island by Fedotov [1912] and Vasilyeva & Nekhaev RANGE. European boreo-nemoral. [2009]. Savignia frontata is reported for the Barents Sea coast of the Kola Peninsula for the first time. Savignia frontata Blackwall, 1833 Bolshoy Aynov Island is the northernmost locality of MATERIAL. 1 $ [1], 1315.VI.2008; 1 $, same locality, 15 the known distribution of eight species: B. luteolus, S. 17.VI.2008; 1 # [5], 2425.VI.2008. frontata, Centromerus arcanus, Micrargus herbigra- COMMENTS. This is the northernmost record of dus, Oryphantes angulatus, Semljicola faustus, Walck- the species, which is reported from the coastal zone of enaeria cuspidata and W. kochi. the Kola Peninsula for the first time. The highest species diversity is observed in the RANGE. West Palaearctic polyzonal. locality 2 where six species were found. The largest number of specimens per biotope (28) was recorded in Semljicola faustus (O. Pickard-Cambridge, 1900) the locality 4. Yet, representatives of the families MATERIAL. 1 $ [2], 1113.VI.2008. COMMENTS. This is one of the northernmost Linyphiidae, Lycosidae, Thomisidae were found in the records of the species. undershrub tundra only, whereas the theridiid Steatoda RANGE. Fennoscandian-Siberian boreal. bipunctata was only found indoor. Due to the limited material studied it is difficult to Tiso aestivus (L. Koch, 1872) provide a detailed chorological analysis. However, the MATERIAL. 1 $ [12], 25.VI.08. structure of spider fauna of the island is similar to those RANGE. Holarctic polyzonal. both of the Kola Peninsula coast [Tanasevitch, Ry- 322 A.A. Nekhaeva & I.O. Nekhaev balov, 2010; Tanasevitch, Kamayev, 2011] and of the References northern Norway coast [Aakra et al., 2000]. The linyphi- ids constitute the majority of species and individuals. Aakra K., Hanssen O., Ødegaard F. 2000. A collection of spiders (Araneae) from palsa bogs in the vicinity of Vardø, northern The spider fauna of Bolshoy Aynov Island consists of Norway // Fauna norv. Vol. 20. P.4347. boreal and polyzonal widespread species, except for Aleksandrova V.D. 1977. [Geobotanical subdivision of the Arctic only O. angulatus having a European range. and Antarctic]. L.: Nauka Publ. 189 p. [in Russian]. Bereslina I.P. 1987. [Plants and waterfowl birds of marine islands of the Kola Subarctic]. L.: Nauka Publ. 200 p. [in Russian]. ACKNOWLEDGEMENTS. We are very grateful to Dr Fedotov D.M.