Rasopone politognatha New Species (Fig. 9; Supp Figs. S28 and S29 [online only]) (Zoobank LSID: urn:lsid:zoobank.org:act: C0B95FEC-48C6-468C- 8E08-46D429972551) HOLOTYPE: 1 worker, Guatemala, Zacapa: 2 km SE La Unión, 14.95442 −89.27697 ± 50 m, 1,430 m, 12-v-2009, cloud forest, ex sifted leaf litter, LLAMA, Wa-B-03-2-08 [CAS, unique specimen identifier CASENT0612523]. PARATYPES: same data as holotype except 14.95448 −89.27704 ± 50 m, 1,430 m, Wa-B-03-2-06 [1 worker, UNAM, CASENT0612522]; 14.95454 −89.27711 ± 50 m, 1,430 m, Wa-B-03-2-04 [1 dealate queen, CAS, CASENT0612518]; 14.9546 −89.27718 ± 50 m, 1,430 m, Wa-B-03-2-02 [1 worker, MCZC, CASENT0612516; 1 worker, UCD, CASENT0612517]; 3.5 km SE La Union, 14.95 −89.26667 ±?, 1,500 m, 4-v-1991, cloud forest, forest litter, R. S. Anderson, RSA 91-050 [1 worker, UVGC, CASENT0603718]; 6-v-1991, RSA 91-053 [1 worker, USNM, CASENT0603251]. Geographic range. Mexico (Chiapas) to Nicaragua. Diagnosis Montane; mandible smooth and shiny; anterior clypeal margin truncate; side of head bare; petiolar node weakly tapering, subcuboidal. Three species are within geographic and size range of R. politognatha: Rasopone ferruginea (Fig. 11; Supp Figs. S12 and S 13 [online only]): mandible striate; anterior clypeal margin sinuous; petiole more scale-like. Rasopone guatemalensis (Fig. 8; Supp Figs. S14 and S15 [online only]): petiole more scale-like; head narrower (mean CI 86 vs 92). Rasopone subcubitalis (Fig. 10; Supp Fig. S32 [online only]): mandible striate. Measurements, worker: HW 1.16 (1.10–1.24, 12); HL 1.27 (1.20– 1.36, 12); SL 0.95 (0.87–0.99, 11); PTH 0.78 (0.71–0.82, 10); PTL 0.43 (0.40–0.47, 10); CI 92 (88–96, 12); SI 82 (79–86, 11); PTI 56 (52–60, 10). Measurements, queen: HW 1.17, HL 1.28, SL 0.98, PTL 0.45, PTH 0.81, CI 91, SI 83, PTI 55 (n = 1). Biology This species occurs in cloud forest habitats, with records from 1,200 to 1,550 m elevation. All collections are workers and, in one case, a dealate queen in Winkler or Berlese samples of forest floor litter and rotten wood. Comments UCE and COI data support the delimitation of this species.

Published as part of Longino, John T. & Branstetter, Michael G., 2020, Phylogenomic Species Delimitation, Taxonomy, and ' Bird Guide' Identification for the Neotropical Ant Genus Rasopone (Hymenoptera: Formicidae), pp. 1-33 in Insect Systematics and Diversity 4 (2) on page 26, DOI: 10.1093/isd/ixaa004, http://zenodo.org/record/3826703