A catalogue of the ants of Paraguay (Hymenoptera: Formicidae) Author Wild, Alexander L. text Zootaxa 2007 1622 1 55 journal article 10.5281/zenodo.179222 9584df9a-a4a2-49bb-a256-cb99776f4dc8 1175-5326 179222 Camponotus lespesii Forel 1886 c . Camponotus sexguttatus r. lespesii Forel 1886c: 169 . [ holotype w examined, MHNG; Colombia ]. Camponotus lespesi subsp. melancholicus Emery 1894b: 2 . NEW SYNONYMY. [w syntypes examined, MCSN, MHNG; Colonia Risso, Paraguay (Borelli)] Camponotus lespesi Forel. Mayr 1887: 513 . Camponotus ( Dinomyrmex ) lespesi Forel. Forel 1914a: 268 . Camponotus ( Tanaemyrmex ) lespesi Forel. Emery 1925: 83 . Camponotus ( Tanaemyrmex ) lespesi subsp. melancholica Emery. Emery 1925: 83 . Camponotus ( Tanaemyrmex ) lespesi melancholicus Forel. Kempf 1972: 68 . In my opinion the literature records of C. lespesii and C. lespesii melancholicus from Paraguay pertain to a single species, and the differences in identification stem from alternate taxonomic interpretations on the part of Forel and Emery. All of the material I have examined is rather homogenous and closely matches Emery’s melancholicus types . The distinct appearance of this ant renders it unlikely to be confused with any other species in Paraguay . Camponotus lespesii is large (mesosomal length> 3.5mm in major workers) and more gracile than any other Paraguayan Camponotus of similar size. Additional diagnostic characters include: head of major worker considerably longer than broad; sides of head of major bearing>15 standing setae; antennal scapes lacking standing setae; antennal scapes longer than head length; mesosoma low and elongate, declivitous propodeal face less than 1/3 length of dorsal face; sculpture of head, mesosoma, and gaster opaque. Forel’s lespesii type , a large minor worker from Colombia , is somewhat lighter in color than the Paraguayan specimens but is otherwise similar. For the purpose of eliminating a trinomen I synonymize C. melancholicus here.