Arachnologische Mitteilungen 58

92 T. Hamřík & O. Košulič public, this species occurs only in the Pannonian region and its close surroundings. This is a xerothermic species that live in areas with rugged terrain on south oriented slopes with xe- rothermic oak forests, oak-hornbeam forests or bushes (Řezáč 2012, Košulič 2017). Location: Two individuals were captured in pitfall traps. At Site 2, one individual was caught in sparse vegetation and another individual was caught on bare soil at Site 3. Megalepthyphantes pseudocollinus (Fig. 4 b) In Europe, the species was found in Hungary, Austria, Czech Republic, Slovakia, Ukraine, Belarus, Russia (Southern Euro- pean, Central European, Western European, Eastern Euro- pean) and Finland, outside Europe it occurs in Russia (West Siberia), the Caucasus,Turkey and Iran (Nentwig et al. 2019). Within the Czech Republic, it has been mapped from only a few areas of Pannonian regions (Buchar & Růžička 2002, Bryja et al. 2005). It was discovered in semixeric habitats in Brtnice-Střížov, the most western area of the species’ occur- rence in the Czech Republic (Svatoň & Jelínek 1998). It is a very rare species that inhabits xerothermic habitats like stony debris in steppes (Bryja et al. 2005). Location: One individual of the species was captured in a pitfall trap in mesophilic vegetation at Site 3. Porrhomma errans (Fig. 4 d) This species has a north-western and central European dis- tribution and was also recorded in Italy (Růžička 2018,WSC 2019). It is a rare species with an unclear ecological requi- rement (Kůrka et al. 2015, BAS 2019). Porrhomma errans is known from different habitats like beet fields, steppe habitats or floodplain forests (Miller 1974, Bryja et al. 2005, Hula et al. 2012). Location: The species was sampled by sweeping at Site 1. Three individuals were sampled both in sparse and dense ve- getation. Alopecosa striatipes (Fig. 4 e) Alopecosa striatipes is an extra-Mediterranean faunal element with a distribution area that extends from the Atlantic coast (Buchar & Thaler 2004). In Europe, the species occurs in Macedonia, Serbia, Montenegro, Croatia, Slovenia, Bulgaria, Romania, Ukraine, Slovakia, Czech Republic, Poland, Ger- many, Belgium, Switzerland and France, outside Europe the species was recorded in Turkey and the Caucasus (Nentwig et al. 2019).The species is known very rarely from the south- eastern part of the Czech Republic (Kůrka et al. 2005). The species occurs in xerothermic habitats like rock steppes, xeric grasslands and edges of pine forests (Buchar & Růžička 2002, Bryja et al. 2005). In general, it is a rare and endangered spi- der species belonging to most of the Red Lists in Central Eu- ropean countries (Gajdoš & Svatoň 2001, Řezáč et al. 2015, Blick et al. 2016). Location: The species was very common within the study area and was found at every site. The highest abundance was at Site 1, where 191 individuals were caught. Altogether, there were 386 individuals captured in pitfall traps and one indivi- dual was swept.The species has a strong population that needs to be highlighted for nature protection and habitat manage- ment of this location. Cheiracanthium oncognathum (Fig. 4 f ) This species is widely distributed in Europe, but only with sporadic findings all over the known distribution area (Nent- wig et al. 2019). In the Czech Republic, the species rarely inhabits deciduous trees and bushes at lower and middle al- titudes (Dolanský 2011). The biotopes of this species have a character of forest edges on sandy subsoil, steep slopes with sparse vegetation or rocky outcrops with aluminum benches. This species lives very covertly and sometimes makes webs in detritus or in sand not deep underground (Dolanský 2011). According to Dolanský (2011), Cheiracanthium oncognathum probably does not penetrate into steppe habitats, which is contrary to the present study’s findings. Location: One individual was collected in a pitfall trap in sparse vegetation at Site 1. This finding is one of the nort- hernmost occurrences of this rare spider species from the Moravian region. Civizelotes pygmaeus (Fig. 4 d) Civizelotes pygmaeus has a distribution area from Europe in- cluding Italy, Slovenia, Austria, Hungary, Slovakia, Czech Republic, Poland, Ukraine, Romania, Macedonia, Russia (Eastern European) to Kazakhstan (Nentwig et al. 2019). In the Czech Republic, it is a rare species of epigeic spider occur- ring under stones on rock steppes, sand quarries and vineyard terraces (Buchar & Růžička 2002, Košulič & Hula 2014). In the southern part of the Czech Republic, it is quite an abun- dant species, however it prefers warm locations with presence of early stages of succession (Košulič et al. 2014). Location: There were 10 individuals collected by pitfall traps in the study area. All individuals were caught in the sparse vegetation or in the spots with a high proportion of stones at all three sites. Zelotes aeneus (Fig. 4 h) This species is widely distributed in Europe, except Northern Europe (Nentwig et al. 2019). In the Czech Republic, it is a rare species with occurrence under stones in steppe habitats, post-industrial biotopes in early stages of succession and gra- zed grasslands (Paschetta et al. 2013). In the southern part of the Czech Republic, this species is very rare with only a few records (ČAS 2019). Location: Altogether, in the study area, 17 individuals were sampled in the pitfall traps from all sites, but most came from Site 1 and Site 2. The individuals were caught in the sparse and also dense vegetation. Thanatus arenarius (Fig. 4 i) This Palaearctic species, widely distributed in Europe, rare- ly occurs in the south-eastern and north-eastern part of the Czech Republic (Szita & Samu 2000, WSC 2019). Habitats of this species are sand dunes, rock steppes, heathlands and it is quite abundant in vineyards, especially on terraces with initial stages of succession (Buchar & Růžička 2002, Košulič & Hula 2014). Křížová (2001) recorded the species approxi- mately 1.5 km away from the Libochovka Valley in 1999 to 2000. Location: This xerothermic spider was sampled in pitfall traps with 704 individuals at all three sites. The highest ab- undance was at Site 2 where 362 individuals were caught. It was found both in sparse and dense vegetation, however, this