Abstract The bee genera Callonychium Brèthes, Psaenythia Gerstaecker and Anthrenoides Ducke are newly recorded in Piauí State, northeastern Brazil. The species reported here are Callonychium brasilience (Ducke, 1907) and Psaenythia variabilis Ducke, 1908, and an as yet unidentified species of Anthrenoides. Images and all known distributional records of these species are also provided. The new occurrences reported herein expand the distribution range of the species to the Caatinga biome.

Abstract The Hymenoptera collection of the Museu de Zoologia da Universidade de São Paulo, Brazil (MZSP) houses one of the most important collections for the Brazilian and Neotropical wasp faunas. The present catalogue lists the type specimens of Pompiloidea, Thynnoidea and Vespoidea (Insecta, Hymenoptera) deposited in the MZSP. The collection includes a total of 422 type specimens (66 holotypes, 28 lectotypes, 278 paratypes, 45 paralectotypes, and five syntypes), being 91 Pompiloidea (40 Mutillidae type specimens of 10 genera and 25 species, 51 Pompilidae type specimens of 4 genera and 27 species), 191 Vespoidea (15 genera and 86 species of Vespidae), and 18 Thynnoidea (eight genera and 12 species of Thynnidae). All information written in labels was compiled and is presented along with additional data from the original descriptions, MZSP records and other sources. We provide Specimage links to high-resolution photographs of holotypes and lectotypes at the Hymenoptera image database of the Ohio State University.

O presente artigo apresenta uma lista dos espécimes tipo de Hymenoptera, excluindo os Aculeata, depositados no Museu de Zoologia da Universidade de São Paulo, Brasil. São apresentadas as informações dos rótulos e também informações adicionais a partir dos registros do MZSP, de material publicado e de outras fontes disponíveis. Fotografias em alta resolução dos holótipos, lectótipos e síntipos estão disponibilizadas digitalmente através de links para o Specimage - o banco de dados de imagens da Ohio State University, onde estão depositadas. A coleção abriga um total de 332 espécimes-tipo (32 holótipos, 266 parátipos, 12 síntipos, 20 paralectótipos e dois lectótipos) pertencentes a oito superfamílias, 18 famílias, 31 subfamílias, 43 gêneros e 83 espécies.

The present paper lists the type specimens of Hymenoptera, excluding Aculeata, deposited in the Museu de Zoologia da Universidade de São Paulo, Brazil. We record all labels contents and also additional information from MZSP registers, published material, and other available sources. High resolution photographs of holotypes, lectotypes and syntypes are available through links to Specimage - the image database of The Ohio State University, where they are archived. The collection comprises a total of 332 type-specimens (32 holotypes, 266 paratypes, 12 syntypes, 20 paralectotypes and two lectotypes) of eight superfamilies, 18 families, 31 subfamilies, 43 genera and 83 species.