titania was substantially reduced during the last glacial maximum and the species only recently colonized much of the Mojave Desert. Phylogeographic analyses indicate that the distribution of E. Geometric morphometric analyses reveal a largely conserved cheliceral morphology among Eremocosta spp. The unexpected phylogenetic position of some samples suggests that the genus may contain additional, morphologically cryptic species. Relationships among sampled species were resolved with strong support and they appear to have diversified within distinct desert regions along an east-to-west progression beginning in the Chihuahuan Desert. Herein we explore the biogeographic history of this group of arachnids using genome-wide single nucleotide polymorphism (SNP) data, morphology, and distribution modelling to study the eremobatid genus Eremocosta, which contains exceptionally large species distributed throughout North American deserts. Recently, research demonstrated that the evolutionary history and biogeography of the family are poorly understood. Species of camel spiders in the family Eremobatidae are an important component of arthropod communities in arid ecosystems throughout North America.

Camel spider