Phylogenomic data reveal three new families of poorly studied Solifugae (camel spiders)

The systematics of the arachnid order Solifugae have been an enigma, owing to challenges in interpreting morphology, a paucity of molecular phylogenetic studies sampling across the group, and a dearth of taxonomic attention for many lineages. Recent work has suggested that solifuge families largely exhibit contiguous distributions and reflect patterns of vicariance, with the exception of three families: Melanoblossidae, Daesiidae and Gylippidae. Morphological studies have cast doubt on their existing circumscriptions and the present composition of these taxa renders their distributions as disjunct. We leveraged ultraconserved elements (UCEs) to test the phylogenetic placement of three key lineages of Solifugae that cause these anomalous distributions: Dinorhax rostrumpsittaci (putative melanoblossid), Namibesia (putative daesiid), and Trichotoma (putative gylippid). Phylogenetic placement of these three genera based on UCEs rendered the families that harbor them as para- or polyphyletic..., , , # Phylogenomic data reveal three new families of poorly studied Solifugae (camel spiders)

[https://doi.org/10.1016/j.ympev.2023.107989](https://doi.org/10.1016/j.ympev.2023.107989 \"Persistent link using digital object identifier\")

## Description of the data and file structure

1. Ultraconserved elements (UCE) alignment files for occupancies: 1% (Occ1_Alignment.phylip), 25% (Occ25_Alignment.phylip), 40% (Occ40_Alignment.phylip) and 50% (Occ50_Alignment.phylip) used for phylogenetic analyses performed using IQ-TREE v.2.1.2. Model selection was performed for each dataset using ModelFinderPlus using MFP + MERGE flag for each locus partition. Nodal support was estimated via 1,000 ultrafast bootstrap (UFBoot) resampling replicates and the Shimodaira-Hasegawa-like approximate likelihood ratio test (SH-aLRT) appended with the flag -bnni.
2. Topology Test files: Input file for testing placement of *Dinorhax* (Dinorhax.treels) and *Trichotoma* (Trichotoma.treels). These tests include approxima...