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 pastinifer group overview With five species (one described as new here), the pastinifer group spans the low elevations of the Bahamas and Cuba ( Fig. 121 ). This group is likely composed of littoral specialists, as it has only been collected from low-lying habitats near the sea. Most nest collections have been taken from wood or woody fruits lying on the ground. These distinctive species have extremely arched mesosomata, broad postpetioles, and incrassate femora, and so are prime examples of the Macromischa syndrome. Members of the pastinifer group may be confused with Temnothorax subditivus , members of the pulchellus group, or morphologically convergent members of the sallei clade. Because of multiple character overlaps between these groups, the keys above and the ‘similar species’ sections below should be used to determine species group membership. The nominal T. pastinifer and T. rutabulafer sp. nov. have historically been conflated as a single species, probably due to a mixed pin prepared by W.M. Mann.