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 scrobalis pronotalis Richards, 1978 Polybia scrobalis pronotalis Richards, 1978: 40 , 88; Holotype ♀ , Colombia , Valle , Cali , 900m , 20.iv.72 ( M. Cooper ) (NHM), examined. Rasmussen & Ansejo 2009: 48 Diagnosis. FEMALE. Very similar to the nominotypical form; occipital-genal margin distinct on the sides; pronotal carina absent; prominence in front of the fovea moderately elevated; more extensive yellow marks, as on the anterior margin of the pronotum and on the second metasomal segment. MALE. Unknown Examined material. Holotype ♀ , COLOMBIA : Valle , Cali , 20. iv.72 ( M. Cooper ) ( NHM ) (photographs) ; Paratype , EQUADOR : Napo , Tandapi , 1♀ 2.vii.31 ( R. Benoist ) ( MNHN ) (photographs) . Distribution. Colômbia , Equador . Remarks. Richards (1978) separated this form from typical scrobalis mainly based on size (with the ranges overlapping), and thickness of genal margin and pronotal prominence. Such differences could not be observed in the examined type material in the NHM, except for those on color, since the holotype of P. s. pronotalis is in fact more extensively marked with yellow spots. Importantly, a paratype at the Paris Museum is much darker, with fewer yellow marks than the holotype . The distributions of the two subspecies seem to be disjunct, with all known records of P. s. pronotalis coming from western Andean regions.