Hidden diversity in plain sight: four new species of Nemesia (Araneae: Mygalomorphae) from the Córdoba Province of Spain

Posted by
  Hidden diversity in plain sight: four new species of Nemesia (Araneae: Mygalomorphae) from the Córdoba Province of Spain Abstract A taxonomic revision of the species of Nemesia Audouin, 1826, distributed in the vicinity of Córdoba City, southern Spain, is presented. Four new species are described: Nemesia morana sp. nov. (female), N. kodama sp. nov. (male and female), N. rosae sp. nov. (male and female), and N. tamajoni sp. nov. (male and female). These species are distinguished by distinct morphological characters, including the shape of the spermathecae, palpal bulbs, and spinnerets, as well as by burrow architecture. Fieldwork was conducted across two of the three major habitat types in the region—the humid, forested mountains of Sierra Morena and the croplands and riparian forests of the Guadalquivir Valley—while the third, the “campiña”, which is mainly composed of agricultural landscapes, remains poorly explored. Sampling methods included pitfall trapping and the direct e...

New data on rare, protected and newly found spiders (Araneae) in the fauna of Poland

Posted by

 


New data on rare, protected, and newly found spiders (Araneae) in the fauna of Poland

Abstract


This study includes 70 new records for 22 rare species in Poland. Two species are new to Poland (Macaroeris nidicolens, Segestria bavarica) and another three are protected (Atypus affinis, Philaeus chrysops, Yllenus arenarius). Another locality of Uloborus walckenaerius was detected, which is the second site of occurence for Poland (the first in a synanthropic environment). The work provides new data showing that climate change is influencing the spread of southern European species. It has also been shown that anthropogenic activities and technical procedures (consisting of power line maintenance) may have a beneficial effect on the preservation of suitable habitats and the rare species of spiders living there. The obtained results complement the data on the distribution of rare species. For some rapidly spreading species, literature data are incomplete and out of date. This work will partially fill these gaps.

Szymański, Dawid & Szymański, Dominik & Szymański, Hubert. (2024). New data on rare, protected and newly found spiders (Araneae) in the fauna of Poland. Fragmenta Faunistica. 66. 63-86. 10.3161/00159301FF2023.66.2.063.