Maximum likelihood phylogeny of the Marxi species group based on Ultraconserved Element phylogenomics (UCE). The red clade highlights the monophyly/exclusivity of Aphonopelma jacobii sp. nov. Except where noted, all nodes are supported by bootstrap support values ≥ 95. All samples included in this tree, except A. jacobii sp. nov. and A. bacadehuachi, are the same samples used in the phylogeny from the US Aphonopelma revision (Hamilton et al. 2016).

 
 
  Part of: Hamilton CA, Hendrixson BE, Silvestre Bringas K (2024) Discovery of a new tarantula species from the Madrean Sky Islands and the first documented instance of syntopy between two montane endemics (Araneae, Theraphosidae, Aphonopelma): a case of prior mistaken identity. ZooKeys 1210: 61-98. https://doi.org/10.3897/zookeys.1210.125318