Two new South American species of Monomorium Mayr with taxonomic notes on the genus. Author Fernández, F. text Memoirs of the American Entomological Institute Editor Snelling, R. R. Editor Fisher, B. L. Editor Ward, P. S. 2007 Advances in ant systematics (Hymenoptera: Formicidae): Homage to E. O. Wilson - 50 years of contributions. 80 128 145 http://plazi.org:8080/dspace/handle/10199/15383 journal article 21280 * Monomorium pharaonis (Linnaeus) Monomorium pharaonis, M. salomonis and M. subopacum are the only species in the Neotropics with head and mesosoma with fine reticulate-punctate sculpturation and mandibular dorsum with coarse longitudinal rugulae. M. pharaonis has two rows of hairs on the head between the vertex and carinae, which distinguishes this species from the other two. M. pharaonis is one of the best-known Old World tramp species.