Hylomyrma dentiloba

Distribution
Panama, Costa Rica (Osa Peninsula).

Distribution based on Regional Taxon Lists
Neotropical Region: Costa Rica, Panama.

Nomenclature

 *  dentiloba. Lundella dentiloba Santschi, 1931c: 271 (w.) PANAMA.
 * Combination in Hylomyrma: Kempf, 1960f: 430. See also: Kempf, 1964e: 52; Kempf, 1973b: 238.

Pierce et al. (2017) - The delimitation of Hylomyrma dentiloba remains unresolved, and for convenience we use a geographic definition of the species. Among the four clusters defined by sequence data, Hylomyrma plumosa is morphologically distinct, but we have found no morphological differences among the remaining three clusters. We use the name H. dentiloba  to refer to H. dentiloba -like material from the Osa Peninsula of Costa Rica south through Panama, and Hylomyrma versuta for material from the Atlantic slope of Costa Rica northward. Thus one scenario is that with further investigation of the Panamanian fauna, cryptic species within "H. dentiloba" will be resolved. An alternative scenario is that H. dentiloba  and H. versuta  together are a single paraphyletic species, with a low level of gene flow, yet having spawned at least one fully differentiated species (H. plumosa) from within the range.

Worker
Pierce et al. (2017) - (n = 3): EL 0.194 - 0.233, EW 0.121 - 0.126, GSL 0.152 - 0.295, HFL 0.706 - 0.783, HL 0.778 - 0.855, HW 0.71 - 0.835, ML 0.977 - 1.115, OMD 0.092 - 0.104, PpL 0.227 - 0.251, PpW 0.293 - 0.35, PronW 0.512 - 0.625, SL 0.548 - 0.591, SPL 0.196 - 0.241, CI 91 - 98, GSI 15 - 26, OI 27 - 30, PpWI 129 - 139, SI 71 - 82, SPI 28 - 31.

Type Material
Pierce et al. (2017) - Holotype worker: Panama, France Field, 2 June 1930 (A. Bierig), CASENT0913528] (AntWeb image examined).