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Integrative taxonomy of the genus Nesticus in central Japan, with the description of a new species and redescriptions of N. echigonus and N. gondai (Araneae, Nesticidae)

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  Integrative taxonomy of the genus Nesticus in central Japan, with the description of a new species and redescriptions of N. echigonus and N. gondai (Araneae, Nesticidae) Abstract Species of the genus Nesticus ( Araneae , Nesticidae ) in central Japan are revised based on morphological and molecular analyses of specimens collected from Niigata and Gunma Prefectures. Among them, a putative undescribed species was discovered having clearly distinguishable morphological characters from other known species in the same area. A phylogenetic analysis based on the mitochondrial COI gene was carried out using a maximum-likelihood method to confirm its distinctiveness. The new species, Nesticus yamabushi sp. nov ., is described based on specimens of both sexes. Furthermore, we provide detailed redescriptions of two other closely related species, N. echigonus and N. gondai , to address the lack of information in their original descriptions and facilitate future identifications. This s...

New Insights on the Geographical Distribution of the Malagasy Genus Neogrosphus Lourenço, 1995 (Scorpiones: Buthidae) with the Description of a New Species from a More Humid Environment

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First molecular data based on the mitochondrial 16S rRNA gene for the endemic harvestman Mediostoma izmiricum Snegovaya, Kurt and Yağmur (Opiliones: Nemastomatidae) from Türkiye, with insights into the phylogenetic relationships of the genus

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Insights into the distribution and ecology of the funnelweb spider Macrothele calpeiana in Portugal

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Temperature-induced changes in lipids and fatty acids in spiders

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A comparative morphology of trichobothrial bases in mygalomorph spiders and its significance for the phylogeny and system of the infraorder (Arachnida: Araneae: Mygalomorphae)

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Seasonal constraints on maternal body size induce transgenerational fitness penalties in a sheet-web spider

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Euscorpius emae sp. n. (Scorpiones: Euscorpiidae), a new scorpion species from Montenegro

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All genera of the world: order Opiliones (Animalia: Arthropoda: Arachnida)

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New data on the distribution of Aguapanela arvi Perafán, Cifuentes & Estrada, 2015 in Colombia through collections and citizen science, with notes on the natural history (Araneae: Theraphosidae)

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New spider species records, and new distributional records, from The Republic of Sudan (Arachnida: Araneae)

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Assessing the current and future distribution of Androctonus mauritanicus in Morocco under climate change using MaxEnt with environmental variables

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Four new species of the rubripes group of Corinna C. L. Koch, 1841 from Brazilian Atlantic Forest (Araneae: Corinnidae)

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A new species of Calommata (Araneae: Atypidae) from Guizhou Province, China

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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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Tails from the Isle of Devils: two new records of non-native invasive scorpions (Arachnida: Scorpiones) successfully intercepted in Bermuda, including the first record of Caraboctonidae

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BjPro-7a, A Proline-Rich Peptide from Bothrops jararaca Venom, Reverses MPP⁺-Induced Locomotor Deficits and Rescues Mitochondrial, Redox, and Synaptic Proteomic Pathways in a Zebrafish Model of Parkinsonism

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One small step for citizens, one giant leap for science: iNaturalist records boost our understanding of the evolution of parental care in a clade of arachnids

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Wildflower Strips Promote Spider Diversity and Biological Control Potential in a Semi-Arid Agroecosystem: Preliminary Insights from a Single Growing Season

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Descriptions of three new high-altitude species of Karschia from Xizang, China (Solifugae: Karschiidae)

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Two New Lynx Spider Species of Hamadruas and Oxyopes and the First Record of Hamadruas Thorell, 1887 (Araneae: Oxyopidae) from Wai, Maharashtra, India

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Delayed Cannibalism in the Litter-Dwelling Scorpion Mesotityus pusillus (Pocock, 1893) (Scorpiones, Buthidae): Evaluating Kin Recognition as a Possible Explanation

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Recent advances in venom pharmacology reshaping venom-to-drug discovery

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On the identity of the poorly known spider species Centromerus obscurus Boesenberg, 1902 and description of a new species (Araneae: Linyphiidae)

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Arachnology, Vol. 20, No. 5 (Summer 2026)

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