The first record of the introduced spider species Nesticella mogera (Yaginuma, 1972) from Russia (Aranei: Nesticidae) 

Abstract

Material and methods In October 2017, two males and a female of N. mogera were caught by pitfall-traps in the territory of the Perm State University during inspection of the greenhouse of the Botanical Garden. When the population of this species was reexamined in March 2018, a large number of mature and immature specimens was found, which allowed the authors to study a spatial distribution of this species and to assess some of its ecological requirements. The greenhouse of the botanical garden of the Perm State University was built in 2010. Its plant collection is divided into five climatic/thematic compartments: "Wet Tropics", "Dry Tropics", "Subtropics", "Epiphytes", "Cacti and succulents" [Botanical Garden…, 2018]. The specimens of N. mogera were found in the first three compartments only. The material studied here has been deposited in the Zoological Museum of the Moscow State University

New data on introduced spider species (Arachnida: Aranei) from the Urals

“…Three years ago, we thought of the synanthropic spider fauna of the City of Perm ase well-studied and extremely poor, with the finding of a new species being a sensation [Esyunin et al, 2019]. The research specifically designed to collect spiders changed that percep-tion.…”

“…The records of one species new to Russia (Coleosoma floridanum) and three new to the Urals (Parasteatoda tabulata, Oecobius navus and Ostearius melanopygius) underline the fact that the knowledge of the synanthropic spider fauna of European part of Russia is still unsatisfactory. At the moment, the synanthropic spider fauna of Perm accounts for twelve species [Esyunin et al, 2019;present (De Geer, 1778), Walckenaeria nudipalpis (Westring, 1851), Xysticus ssp. ), three synanthropic (S. castanea, S. grossa and T. domestica) and four introduced species (N. mogera, O. melanopygius, P. tabulata, and C. floridanum) have been found there.…”

“…Ostearius melanopygius (O. Pickard-Cambridge, 1880) In 2019, the theridiid spider Nesticella mogera was discovered in the greenhouse complex of the Botanical Garden of the Perm State University (Russia). It was probably introduced there with plants originated from the Kuban Subtropical Botanical Garden [Esyunin et al, 2019]. This finding prompted a more detailed study of the greenhouse complex for possible records of other introduced species.…”

Sacarum nemkovi gen. et sp.n. (Aranei: Nesticidae), from the steppe Cisurals, Russia

“…N. mogera is represented by introduced populations in Europe and the Urals. In temperate areas of Europe, it is a true synanthropic (=eusynanthropic) species [Esyunin et al, 2019]; naturalized populations of this species are only known from South Europe (Ballarin, pers. comm.)…”

“…comm.) and the Caucasus [Marusik, Guseinov, 2003].At the moment, three nesticid species have been reported from the Urals [Esyunin, Efimik, 1995, 1998Esyunin et al, 2019], of which one, Aituaria pontica (Spassky, 1932), is known from the cis-Ural steppe zone [Esyunin, 2017]. During the past decade numerous materials have been collected from various localities of the steppe zone of Orenburg Area.…”