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 waldoi Zavattari, 1912 Zethus waldoi Zavattari, 1912 : Arch. Naturgesch. 78A (4): 10 (key), 19, male (in division Zethus )—“Columbia: Bogota ” ( Berlin ).— Bohart & Stange, 1965: 127 (key), 135 (in subgenus Zethusculus ; only holotype studied). Type: Holotype : Colombia : male, Berlin ( MFN ). Examined by picture . Diagnosis. Distinct notaulices, scutellum with a fissure, petiole very smooth, stem of T2 long in relation with the stem of T1, and a large and nearly curved ligulate process on S5. Species known only from holotype . Redescription. Male: Coloration: Black with yellowish areas as follows: apex of clypeus; two spots above the antennal sockets; wings dark brown. Structure: Apex of clypeus with a slight concavity between two small teeth; mandible tridentate with the second tooth molariform; humerus rounded; mesoscutum with distinct notaulices; fissured scutellum; tegula with posterior margin rounded; T2 longer than T1; S5 with a large curved ligulate process. Sculpture: Clypeus with macro-punctures indistinct; scutum with macro-punctures more sparse; propodeum with transverse stripes on the posterior face; petiole nearly smooth; T1 and T2 with greater density of micro-punctation; T3 to T7 and S3 to S7 with macro-punctuated in the post-gradular region and smooth in the pre-gradular region. Chaeototaxy: Short, thick and yellowish-white; lateral region of clypeus with dense hair; metanotum and propodeum with erect, long and sparse hair; T3 to T7 with shorter but evident hair; S2 to S7 with long and thick hair, especially in the apical region. Female: Unknown. Comments. The description is limited to what was examined in the pictures of the type specimen. A more detailed description of the holotype can be found in Bohart & Stange (1965:135) .