Xenomyrmex stollii

City of Guatemala. A certain number of workers with their larvae and pupae, associated with a formicary of Camponotus abscisus, in an enormous oakgall (Dr. Stoll).

Distribution based on Regional Taxon Lists
Neotropical Region: Brazil, Guatemala, Mexico.

Biology
Wheeler (1931), for the synonymized subspecies mexicanus - Described from three specimens taken by Dr. Elisabeth Skwarra in an epiphyte, Tillandsia balbisiana Schult. fil. at Mirador (Zacuapam), in the State of Veracruz, Mexico.

Nomenclature

 *  stollii. Xenomyrmex stollii Forel, 1885a: 370 (w.) GUATEMALA. Senior synonym of mexicanus, nodosus: Creighton, 1957c: 10.
 * mexicanus. Xenomyrmex stolli subsp. mexicanus Wheeler, W.M. 1931a: 134 (w.) MEXICO. Wheeler, G.C. & Wheeler, J. 1960b: 20 (l.). Junior synonym of stollii: Creighton, 1957c: 10.
 * nodosus. Xenomyrmex stolli subsp. nodosus Creighton, 1953e: 2, fig. 1 (w.q.) MEXICO. Junior synonym of stollii: Creighton, 1957c: 10.

Worker
Wheeler (1931) - Length 2-2.3 mm.

Mandibles smooth and shining, with a few scattered punctures. Entire body, including the head, low and depressed. Epinotum with rounded basal surface passing through a curve into the declivous surface.

There are a few short, longitudinal rugae on the cheeks, the sides of the clypeus and the sides of the front. All the remainder of the body entirely smooth and very shining, with a few scattered punctures. Some very sparse, erect hairs on all parts of the body. Scapes and legs with moderately abundant, subappressed pilosity. Pubescence absent. Deep chestnut brown, nearly black, thorax often paler. Pedicel, legs, scapes, base of funiculus and especially the mandibles and tarsi paler, reddish brown.