Taxonomic revision and cladistic analysis of the species of Zethus mexicanus group (Linnaeus, 1758) sensu Bohart & Stange, 1965 (Hymenoptera, Vespidae, Eumeninae) Author Golfetti, Ivan F. Author Lopes, Rogério B. Author Noll, Fernando B. text Zootaxa 2020 2020-02-26 4743 3 337 358 journal article 10.11646/zootaxa.4743.3.2 d550dc04-c72b-4e27-8348-5c6ae98ba144 1175-5326 3688233 9AA51090-EE14-48EB-9169-E08CEBFCAE8A Zethus magnus de Saussure, 1852 Zethus magnus de Saussure, 1852: 11 , (male, “Le Bresil ”), (Paris). Smith, 1857: 10 (catalogue). de Saussure, 1875: 16 (syn. of Z. coeruleopennis ). Bohart and Stange, 1965: 128 (key), (male, female; distinct species; subgenus Zethusculus ); ( Brazil ; Suriname ; Peru ; Bolivia ). Stange, 1975: 80 , 89. Type: Holotype : Brazil : male, Paris ( MNHN ). Examined . Material additional examined: 1♀ . (Appendix I). Diagnosis. More robust than the other members of the group. Macro-punctuation coarse. Males with condylar carina developed. Clypeus with dense macro-punctuation. Species considered rare compared with Z. brasiliensis and Z. mexicanus . Redescription. Male: As described for Z. brasiliensis except: Coloration: Completely black. Structure: Mandible, carina condylar evident; scutum strongly curved; petiole with abrupt expansion. Sculpture: Dense and coarse macro-punctures, resembling a leather surface; clypeus with coarse, dense and deep punctuation. Chaeototaxy: More dense, thick and yellowish. Female: As described to the male, except: Structure: Mandible without condylar carina; apex antennal nonwrapped; clipeo without concavity and apical teeth; mandible tetradentated with the third tooth molariform; S5 and S6 without ligulate processes. Sculpture: macro-punctuations less coarse; clypeus micro-striated between the punctures.