All genera of the world: Order Scorpiones (Animalia: Arthropoda: Arachnida)

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  All genera of the world: Order Scorpiones (Animalia: Arthropoda: Arachnida) Abstract The present contribution provides a consensus classification of the arachnid Order Scorpiones C.L. Koch, 1850, and updates the counts of extant and extinct genera and species through the end of 2025. Including the revisions implemented herein, there are 459 genus-group names available in Scorpiones by the end of 2025. Of these, 318 refer to currently accepted extant genera (220), subfossil genera (1) and extinct genera (97). Fifty-four genus-group names are newly synonymized, raising to 145 the number in synonymy, whereas sixteen genus-group names are revalidated and/or newly elevated to the rank of genus. Including the revisions implemented herein, Scorpiones includes 3,089 currently accepted species-group names (2,918 extant species, 1 subfossil species, and 170 extinct species) and 22 nomina dubia. Forty-seven species-group names are newly synonymized, whereas 43 species-group names are revali...

Neglected no longer: Phylogenomic resolution of higher-level relationships in Solifugae

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Neglected no longer: Phylogenomic resolution of higher-level relationships in Solifugae

Summary
Advanced sequencing technologies have expedited resolving higher-level arthropod relationships. Yet, dark branches persist, principally among groups occurring in cryptic habitats. Among chelicerates, Solifugae (“camel spiders”) is the last order lacking a higher-level phylogeny and thus, historically characterized as “neglected [arachnid] cousins”. Though renowned for aggression, remarkable running speed, and xeric adaptation, inferring solifuge relationships has been hindered by inaccessibility of diagnostic morphological characters, whereas molecular investigations have been limited to one of 12 recognized families. Our phylogenomic dataset via capture of ultraconserved elements sampling all extant families recovered a well-resolved phylogeny, with two distinct groups of New World taxa nested within a broader Paleotropical radiation. Divergence times using fossil calibrations inferred Solifugae radiated by the Permian, and most families diverged pre-Paleogene-Cretaceous extinction, largely driven by continental breakup. We establish Boreosolifugae new suborder uniting five Laurasian families, and Australosolifugae new suborder uniting seven Gondwanan families using morphological and biogeographic signal.

Siddharth S. Kulkarni,Hugh G. Steiner,Erika L. Garcia,Hernán Iuri,R. Ryan Jones,Jesús A. Ballesteros,Guilherme Gainett,Matthew R. Graham,Danilo Harms,Robin Lyle,Andrés A. Ojanguren-Affilastro,Carlos E. Santibañez-López,Gustavo Silva de Miranda et al.

Publication: 

iScience (PDF)

Publisher: 

Elsevier

Date: 

Available online 19 August 2023