The primary types of some species of Centris bees described by European entomologists in the 18 and 20 centuries (Hymenoptera: Apidae) Author Vivallo, Felipe AC109712-1474-4B5D-897B-1EE51459E792 HYMN Laboratório de Hymenoptera, Departamento de Entomologia, Museu Nacional, Universidade Federal do Rio de Janeiro, Quinta da Boa Vista, São Cristóvão 20940 ‒ 040 Rio de Janeiro, RJ, Brazil. fvivallo@yahoo.com text European Journal of Taxonomy 2023 2023-03-27 864 1 27 journal article 10.5852/ejt.2023.864.2083 2118-9773 8011935 4F73AB5F-A4B7-43AD-949E-A40FFEEABF4F Centrispyropyga ( Spinola, 1841 ) Hemisiapyropyga Spinola, 1841: 148 (junior synonym of C . nobilis Westwood, 1840 ). Type data Spinola described this species using a single female specimen. The holotype is currently housed at MSNT (not examined). Type locality French Guiana : Cayenne. Embrik Strand Embrik Strand (1876–1947) was a Norwegian botanist, entomologist, arachnologist and naturalist. Between 1901 and 1903, he worked as curator in the Museum of Zoology of the Universitetet i Kristiania, currently Universitetet i Oslo (University of Oslo ), Norway . Later he moved to Germany to continue his studies in zoology. In Norway , Strand worked at different museums and universities until 1923, when he moved to Latvia . There he worked as professor of zoology at the Rīgas Universitāte, currently Latvijas Universitāte (University of Latvia ) ( Natvig 1944 ). Specimens of the Strand’s collection can be found in the Zoological Museum of the University of Oslo, and in the ZMB . Strand passed away in Riga , Latvia , aged 71. Strand’s Centris bee Strand described a single taxon in Centris , the variety C . sponsaasuncionis Strand, 1910 . The description was based on specimens collected by the Hungarian pharmacist, biologist, botanist and researcher János Dániel Anisits (1856‒1911). Anisits migrated to Paraguay after he graduated as a pharmacist in Budapest ( Vivallo 2020d ). In this country he worked actively, collecting biological material and discovering several new species, mainly plants ( Magyarország és Latin-Amerika 2019). This variety remained forgotten until it was cited by Moure et al . (2007) as junior synonym of C . sponsa Smith, 1854 . Despite the similarity between them, they seem to be different species. Here, it is proposed to withdraw C . sponsaasuncionis from the synonymy of C . sponsa , revalidate it and raise it to species level.