Caenaugochlora (Metaugochlora) Engel 2014, new subgenus

Metaugochlora Engel, new subgenus ZooBank: urn:lsid:zoobank.org:act: 830D604F-7863-4259-A898-C2DD1E1FCAFC TYPE SPECIES: Caenaugochlora (Caenaugochlora) bennetti Gonçalves & Engel, 2010. DIAGNOSIS: Compound eyes setose (usually setose in Caenaugochlora s.str., only minute setae present in Ctenaugochlora); preoccipital ridge carinate (sharply angled in Caenaugochlora s.str. except C. macswaini Michener and C. elpidia Engel; carinate in Ctenaugochlora); female metabasitibial plate with strong anterior and posterior borders (as in Caenaugochlora s.str., anterior border obsolescent in Ctenaugochlora); female inner metatibial spur pectinate, with less than 10 long branches (as in Caenaugochlora s.str., densely pectinate with more than 10 long branches in Ctenaugochlora); striae of basal area of propodeum not reaching apical margin (as in Caenaugochlora s.str., striae reach the apical margin in Ctenaugochlora); male metasomal sternum IV with long, lateral, postgradular projections bearing elongate setae at their apices (such projections absent in Caenaugochlora s.str. and Ctenaugochlora); male genitalia with parapenial lobe broad (narrow elsewhere in genus). ETYMOLOGY: The subgeneric name is a combination of the Greek meta, meaning, “between” or “among” and implying change, and Augochlora, type genus of the tribe. The gender of the name is feminine. INCLUDED SPECIES: Caenaugochlora (Metaugochlora) bennetti Gonçalves & Engel and C. (M.) quichua Gonçalves & Engel, both from the Andes of Ecuador. COMMENTS: Although the author previously hesitated to remove these species from Caenaugochlora s.str. (Gonçalves & Engel, 2010), it no longer seems as though such an overly conservative decision was well founded. A new key to the subgenera of Caenaugochlora is here provided.Published as part of Engel, Michael S., 2014, Three new species of the genus Caenaugochlora from Central America and Colombia (Hymenoptera: Halictidae), pp. 1-15 in Journal of Melitology 2014 (41) on pages 12-13, DOI: 10.17161/jom.v0i41.4810, http://zenodo.org/record/813209