Taxonomic study of wasp species in the Polybia (Myrapetra) occidentalis group morphologically related to P. scrobalis and P. flavifrons, with description of a new species (Hymenoptera, Vespidae, Polistinae) Author Amorim, Danielle C. De A. Museu Paraense Emílio Goeldi-MPEG, Coordenação de Zoologia, Laboratório de Entomologia, Avenida Perimetral, 1901, Terra Firme, CEP: 66077 - 830, Belém, Pará, Brasil. Author Dos Santos Junior, José N. A. Universidade Federal do Sul e Sudeste do Pará-Folha 31, Quadra 07, Lote Especial, s / n. º-Nova Marabá, Marabá-PA, 68507 - 590, São Félix do Xingú, Pará, Brasil. Author Carvalho- Filho, Fernando Da S. 0000-0002-2480-3874 Museu Paraense Emílio Goeldi-MPEG, Coordenação de Zoologia, Laboratório de Entomologia, Avenida Perimetral, 1901, Terra Firme, CEP: 66077 - 830, Belém, Pará, Brasil. fernandofilho@museu-goeldi.br Author Silveira, Orlando T. 0000-0002-5899-199X Museu Paraense Emílio Goeldi-MPEG, Coordenação de Zoologia, Laboratório de Entomologia, Avenida Perimetral, 1901, Terra Firme, CEP: 66077 - 830, Belém, Pará, Brasil. orlando@museu-goeldi.br Author Carpenter, James M. American Museum of Natural History- 200 Central Park W, New York, NY 10024, USA. text Zootaxa 2024 2024-07-11 5477 5 537 562 http://dx.doi.org/10.11646/zootaxa.5477.5.2 journal article 10.11646/zootaxa.5477.5.2 1175-5326 12733301 5F7FB3F5-BC72-40C3-BB2A-63C4C6F119CA Polybia flavifrons flavifrons Smith, 1857 Polybia flavifrons Smith, 1857: 152 . Holotype , Ecuador , Guayaquil (NHM); examined. Polybia saussurei Holmgren, 1868: 440 . Lectotype , Ecuador , Puná (NR, Stockholm) Diagnosis. FEMALE. Body covered with distinct setae, propodeum with dense appressed pubescence, first metasomal sternum with numerous distinct setae; gena wide and with a distinct margin; pronotal carina weak; first metasomal tergum relatively elongate for the group, ca. 1.1X longer than mesopleuron height, but wide distally; gena always yellow; clypeus entirely yellow. MALE. According to Richards (1978) has color similar as yellowest female; gena narrower; clypeus less angulated below and with less dense silvery pubescence. Examined material. EQUADOR : Arenillas , 1♀ 20.ii.1984 ; Manabi , Portoviejo , 1♀ 22.xii.1971 ( M. Cooper ) (NHM; photographs) Distribution. Equador .