Skip to main content Skip to main navigation menu Skip to site footer
Type: Monograph
Published: 2023-11-14
Page range: 1-128
Abstract views: 194
PDF downloaded: 29

Description of fifty-one new species and new taxonomic arrangement for the E. sexdens group of the subgenus Edessa (Heteroptera, Pentatomidae, Edessinae, Edessa)

Universidade Federal do Pará; Instituto de Ciências Biológicas; Av. Augusto Correa #1 66075–110; Belém; Pará; Brazil; Programa de Pós-Graduação em Zoologia UFPA/MPEG
Universidade Federal do Pará; Instituto de Ciências Biológicas; Av. Augusto Correa #1 66075–110; Belém; Pará; Brazil
Universidade Federal do Pará; Instituto de Ciências Biológicas; Av. Augusto Correa #1 66075–110; Belém; Pará; Brazil
Hemiptera Amazon Brazilian Amazon Neotropical region New combination Nomenclatural act Taxonomy


Within the subfamily Edessinae, Edessa Fabricius, 1803 is the genus with the most nomenclatural and taxonomic issues, basically related to the large number of poorly described species and the large number of new species. Furthermore, for many groups of morphologically similar species, certain names are used as “tag names”, adding to confusion and misidentification. The genus Edessa has been studied in small groups of species, either informal morphological groups within the genus or formal subgenera. Recently the nominal subgenus was revised and delimited, including the group E. sexdens. The E. sexdens group is diagnosed by a combination of characters such as anterior arms of metasternal process with excavated apex; connexival segments with a pair of dark spots; ventral surface of abdomen elevated medially; presence of a shallow rounded excavation near each spiracle; pygophore with union of dorsal rim and posterolateral angles with a groove, superior processes of the genital cup laminar, oblique to the paramere and continued ventrally by a carina; and paramere with three lobes. The biology of species in this group is almost unknown and most species have been collected in the Amazon region, particularly in the Brazilian Amazon. This group is the largest, in number of species, within the subgenus Edessa, presenting a surprising number of new species. In this article, fifty-one species new to science are described and Olbia magnifica Pirán, 1958 is transferred to Edessa. The composition of the E. sexdens group is updated to 74 species (23 previously described and 51 described here). The identification key to the species of the E. sexdens group is updated, and maps with the distribution of the new species are presented.



  1. Dupuis, C. (1970) Heteroptera. In: Tuxen, S.L. (Ed.), Taxonomist’s Glossary of Genitalia of Insects. Copenhagen, Munsk gaard, pp. 190–208.
  2. Ely e Silva, E.J., Fernandes, J.A.M. & Grazia, J. (2006) Caracterização do grupo E. rufomarginata e descrição de sete novas espécies (Heteroptera, Pentatomidae, Edessinae). Iheringia, Série Zoologia, 96 (3), 345–362.
  3. Fernandes, J.A.M., Nascimento, A.T.S. & Nunes, B.M. (2018) Revision of Pygoda Amyot & Serville, 1843 stat. rest. (Heteroptera: Pentatomidae: Edessinae) with description of four new species. Zootaxa, 4466 (2), 205–232.
  4. Fernandes, J.A.M, Silva, V.J., Correia, A.O. & Nunes, B.M. (2015) New species of Edessa Fabricius, 1803 (Hemiptera: Pentatomidae) from Costa Rica. Zootaxa, 3999 (4), 511–536.
  5. Kirkaldy, G.W. (1909) Catalogue of the Hemiptera (Heteroptera) Vol. I: Cimicidae. Felix L. Dames, Berlin, xl + 392 pp.
  6. Kment, P. & Vilímová, J. (2010) Thoracic scent efferent system of Pentatomoidea (Hemiptera: Heteroptera): a review of terminology. Zootaxa, 2706 (1), 1–77.
  7. Mendonça, M.T.S., Nunes, B.M. & Fernandes, J.A.M. (2021) Description of fifteen new species of the Hypoxys balteatus species group (Hemiptera: Heteroptera: Pentatomidae). Acta Entomologica Musei nationalis pragae, 61 (1), 289–318.
  8. Mendonça, M.T.S., Silva, V.J. & Fernandes, J.A.M. (2023) Diagnose of the nominal subgenus of Edessa and description of the E. sexdens group (Heteroptera, Pentatomidae, Edessinae). Zootaxa, 5240 (1), 1–63.
  9. Nunes, B.M., Campos, L.D., Mendonca, M.T.S., Cunha, E.V.P. & Fernandes, J.A.M. (2020) Revision of Hypoxys Amyot and Serville, 1843 stat. rest. (Heteroptera Pentatomidae). Zootaxa, 4742 (3), 401–441.
  10. Pirán, A.A. (1958) Olbia magnifica sp. n. de la Fauna de Bolivia. Neotropica, 4 (14), 61–62.
  11. QGIS Development Team (2022). QGIS Geographic Information System. Open Source Geospatial Foundation. Available from: (accessed 10 May 2022)
  12. Santos, B.T.S., Silva, V.J. & Fernandes, J.A.M. (2015) Revision of Ascra with proposition of the bifida species group and description of two new species (Hemiptera: Pentatomidae: Edessinae). Zootaxa, 4034 (3), 445–470.
  13. Silva, V.J. (2017) Análise Cladística e Revisão do subgênero nominal de Edessa (Heteroptera, Pentatomidae, Edessinae). Tese de doutorado (Doutorado em Zoologia), Programa de Pós-graduação em Zoologia, Universidade Federal do Pará e Museu Paraense Emílio Goeldi, Belém, 411 pp.
  14. Stål, C. (1862) Hemiptera Mexicana enumeravit speciesque novas descripsit. Stettiner Entomologische Zeitung, 23 (1–2), 81–118.
  15. Stål, C. (1872) Enumeratio Hemipterorum. Bildrag till em förteckning öfver alla hittilis kånda Hemiptera, Jemte systematiska meddelanden. 2. Kongliga Svenska Vetenskaps – Akademiens Handlingar, Neue Folge, 10 (4), 1–159.
  16. Zhou, Y. & Rédei, D. (2020) From lanceolate to plate-like: Gross morphology, terminology, and evolutionary trends of the trichophoran ovipositor. Arthropod Structure & Development, 54 (2020), 100914, 1–29.