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Tracking a Tarantula Diversification in a Neotropical Open Biome

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  Tracking a Tarantula Diversification in a Neotropical Open Biome ABSTRACT Aim To investigate the lineages diversification of Dolichothele exilis in the Caatinga biome and to infer geological and climatic drivers of diversification in this region. Location Caatinga, Northeast of Brazil. Taxon Dolichothele exilis (Araneae: Theraphosidae). Methods We used 96 individuals for genomic sequencing (GBS sequencing) and 39 individuals for COI mitochondrial marker sequencing. Population structure was inferred using STRUCTURE and SNMF approaches, and genetic diversity and diversification indices were calculated. A maximum likelihood phylogenetic tree was constructed with SNPs data and a Bayesian tree with mitochondrial data. To explore the demographic history, DIYABC was used, with a Random Forest (RF) classifier. Finally, we constructed Habitat Suitability models using five different algorithms to investigate present and past potential distributions. Results Analyses based on SNPs data an...

Temperate forest heterogeneity decreases local and landscape-scale spider diversity through habitat filtering despite increasing species turnover

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A survey of Synaphosus Platnick & Shadab, 1980 (Araneae: Gnaphosidae) in Azerbaijan, including the description of a new species

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Distinct pathophysiological mechanisms of Heterometrus laoticus and Lychas mucronatus scorpion venoms on cardiovascular and renal functions

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From oceans to mountains: global dispersal and local diversification in Rhene (Araneae: Salticidae)

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

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First Record of Predation on a Regal Black-striped Snake, Coniophanes imperialis (Serpentes: Dipsadidae), by a Mexican Red-rump Tarantula, Tliltocatl vagans (Araneae: Theraphosidae), in Quintana Roo, Mexico

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First catalog of spiders of Morocco (Arachnida: Araneae): A critical review of all spider species cited from Morocco with their localities

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DNA metabarcoding to estimate diet overlap between the introduced Joro spider (Trichonephila clavata) and three native orb-weaving spiders

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Notes on the identity of the orb-weaver spider Araneus nox Simon, 1877 (Araneae: Araneidae) from India, including its transfer to Eriovixia Archer, 1951 and one new synonymy

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A new species of Oecobius and the first record of Uroctea thaleri from Saudi Arabia (Araneae: Oecobiidae)

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Chromosome-level genome assembly of the jumping spider Spartaeus platnicki

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On a new genus of dwarf tarantulas (Araneae: Mygalomorphae: Theraphosidae) endemic from Peru: evidence from morphology and molecular phylogeny, with description of three new species

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One time only: determining spider diversity along a latitudinal gradient in South Africa's arid Succulent Karoo and Desert biomes using a rapid sampling protocol

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Taxonomic and Faunistic Contributions to the Spider Fauna of Iraq (Araneae)

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Three new species of Hamataliwa Keyserling, 1887 from Xizang, China (Araneae, Oxyopidae)

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The Journal of Arachnology VOL. 53 · NO. 3 | 2025–2026

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Ballistic high-powered spider webs overcome dangerous prey defenses

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A new species of the genus Selenocosmia Ausserer, 1871 (Araneae: Theraphosidae) from the karst landscapes of Meghalaya, India

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The first known troglomorphic, eyeless spider wasp (Hymenoptera: Pompilidae): Troglopompilus miracaecatus gen. et sp. nov. from the Nullarbor Caves, Western Australia

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AaTs-1, a Tetrapeptide from Scorpion Venom Mitigates Demyelination and Neuroinflammation in a Cuprizone-Induced Model of Multiple Sclerosis

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