Taxonomic revision of the Temnothorax salvini clade (Hymenoptera: Formicidae), with a key to the clades of New World Temnothorax Author Prebus, Matthew M. School of Life Sciences, Arizona State University, Tempe, Arizona, United States & Department of Entomology & Nematology, University of California, Davis, Davis, California, United States mprebus@gmail.com text PeerJ 2021 e 11514 2021-06-30 9 1 462 http://dx.doi.org/10.7717/peerj.11514 journal article 10.7717/peerj.11514 e56413f9-7dc9-4ebc-9085-008cb38b4dc1 2167-8359 PMC8254503 34249486 5102026 fuscatus group overview With four species (one described as new here), the fuscatus group is another small group with a range spanning the mid-to-high elevations of central Mexico to southern Central America ( Fig. 107 ). All nest collections of fuscatus group species have been from arboreal habitats, either nesting in vegetation (alive or dead) on live trees or in epiphytes. The low, long petiolar node distinguishes this group from nearly everything else in the salvini clade. Apparently, the fuscatus group is sister to the ground-nesting pergandei group (Prebus, in prep.).