Systematic revision of the Savignia genus group (Araneae: Linyphiidae: Erigoninae) with notes on their cephalic lobe evolution

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  Systematic revision of the Savignia genus group (Araneae: Linyphiidae: Erigoninae) with notes on their cephalic lobe evolution Abstract The Savignia genus group includes nine morphologically complex yet similar genera where species were assigned based mainly on the cephalic lobes. Among these genera, males of Diplocephalus Bertkau, 1883, Savignia Blackwall, 1833 and Araeoncus Simon, 1884 show some of the most extraordinary cephalic lobes among dwarf spiders (Linyphiidae, Erigoninae). In this study we undertake the first phylogenetic analysis of the Savignia genus group. We use 269 morphological characters (175 newly defined) and 70 taxa (59 ingroup taxa) to reconstruct the relationships and evolutionary trends of cephalic lobes in this lineage. Our findings show that cephalic lobes with varying shapes and sizes appear in several Savignia genus group lineages, highlighting that it is not a good diagnostic character. The high support in several clades allows the redefinition of t...

New records of spiders (Arachnida: Araneae) from Azerbaijan, including the first record of Nephilidae from the Western Palaearctic

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New records of spiders (Arachnida: Araneae) from Azerbaijan, including the first record of Nephilidae from the Western Palaearctic

Abstract
New faunistic data on spiders of Azerbaijan are presented. Thirteen species are recorded from this country for the first time: Araniella villanii Zamani, Marusik & Šestáková, 2020 (Araneidae), Cesonia aspida Chatzaki, 2002, Civizelotes solstitialis (Levy, 1998), Cryptodrassus hungaricus (Balogh, 1935), Gnaphosa cumensis Ponomarev, 1981, G. ukrainica Ovtsharenko, Platnick & Song, 1992, Micaria atropatene Zamani & Marusik, 2021, Trichothyse senilis (O. Pickard-Cambridge, 1872), Turkozelotes attavirus Chatzaki, 2019 (all Gnaphosidae),Trichonephila clavata (L. Koch, 1878) (Nephilidae), Neottiura uncinata (Lucas, 1846), Paidiscura pallens (Blackwall, 1834)(both Theridiidae), and Xysticus edax (O. Pickard-Cambridge,1872) (Thomisidae); the genera Cesonia Simon, 1893 and Trichonephila Dahl, 1911 are newly recorded from the Caucasus. The record of T. clavata represents the first documented introduction of this family in the Western Palaearctic. 

Zamani, Alireza & Nuruyeva, Tamara & Snegovaya, Nataly & Marusik, Yuri. (2025). New records of spiders (Arachnida: Araneae) from Azerbaijan, including the first record of Nephilidae from the Western Palaearctic. Arachnology. 20. 132–37. via Researchgate