Abstract Leurus Townes, 1946 is a small genus of Metopiinae (Hymenoptera: Ichneumonidae), consisting of 13 described species distributed in the Neotropics and the Nearctic region. The present work aims to contribute to the taxonomic knowledge of Leurus in Brazil. A total of 109 specimens were identified and 15 literature records were analyzed. The genus geographical occurrence was evaluated according to data obtained from the literature and labels of analyzed specimens. Five species of Leurus were identified for the Brazilian fauna: L. angustignathus, L. caeruliventris, L. discus, L. gracius and L. nostrus. New municipality records of occurrence were made for L. angustignathus in the state of São Paulo, L. caeruliventris in the states of Bahia, Distrito Federal, Mato Grosso, Mato Grosso do Sul, Minas Gerais, Paraná, Piauí and Rondônia; for, L. discus in the state of Alagoas and São Paulo, and L. gracius in the state of Minas Gerais, Rio de Janeiro, and São Paulo. Females of L. angustignathus and L. gracius were described for the first time in the present study. The genitalia of males of L. caeruliventris, L. discus and L. gracius were described and illustrated for the first time.

RESUMO Este artigo trata das práticas curatoriais adotadas na seção de entomologia do Museu de Zoologia da Universidade de São Paulo. Adicionalmente, apresenta uma breve introdução sobre sua origem, a formação dos museus de história natural, os paradigmas adotados pela curadoria desde a formação do acervo, bem como os desafios para manter e disponibilizar as coleções no cenário atual de carência de técnicos e pesquisadores, inadequação de infraestrutura, diminuição do investimento em ciência e tecnologia e crescente aporte de material biológico para instituições oficiais feito por fontes externas ao museu.

ABSTRACT This article discusses the curatorial practices adopted in the Entomology section of the Museum of Zoology of the University of Sao Paulo (MZ-USP). Moreover, it presents a brief introduction on the formation of Natural History Museums and the origins of the MZ-USP, exploring the paradigms adopted by the curatorship since the collection creation and the challenges in maintaining and making collections available in the current scenario of scarcity of technicians and researchers, inadequate infrastructure, decreased investment in Science and Technology, and increasing supply of biological samples from outside sources to official institutions.

Abstract This study aimed to assess the diversity, abundance and seasonal dynamics of Ophioniformes wasps collected throughout a year, as recorded in Malaise traps set at the Reserva Ecológica da Universidade Estadual do Mato Grosso do Sul, a Brazilian Savanna area in Aquidauana city, MS. A total of 621 specimens of Ophioniformes belonging to 11 subfamilies, 30 genera and 106 species were sampled. Despite the impressive number of species found, in a pattern of a few relatively abundant species and many rare ones, our data estimate even higher richness, probably between 125 to 165 species in the studied area. The genera Diadegma, Nonnus, Diradops, Meniscomorpha, Syzeuctus, Ophiopterus and Thyreodon are recorded for the first time in Mato Grosso do Sul State. Among the climatic variables evaluated, mean temperature and relative humidity were positively and significantly correlated with richness and abundance. Our data highlights the huge unknown species richness of these parasitoids in Brazil and the need of taxonomic studies efforts in the future.

Abstract This catalogue lists the type specimens of Crabronidae and Sphecidae (Hymenoptera: Apoidea) deposited in the Museu de Zoologia da Universidade de São Paulo, Brazil (MZUSP). The collection includes a total of 83 type specimens (17 holotypes, 66 paratypes), 82 of which belong to nine genera and 35 species of Crabronidae and only one of Sphecidae. All labels contents and additional information obtained from other available sources are presented. High resolution photographs of the primary types are also provided.

RESUMO O presente catálogo lista espécimens tipo de Chysidoidea depositados no Museu de Zoologia da Universidade de São Paulo. A coleção inclui 75 holótipos, 791 parátipos, 2 lectótipos, 1 paralectótipo e 5 síntipos de 97 espécies nominais. Toda informação contida nas etiquetas foi compilada e é apresentada junto com informações adicionais retiradas de fontes originais, registros do museu e outras fontes. São ainda apresentados links para fotografias em alta resolução dos holótipos, lectótipos e síntipos hospedadas no Specimage, banco de imagens da Ohio State University.

ABSTRACT The present catalogue lists type specimens of Chrysidoidea deposited in the Museu de Zoologia da Universidade de São Paulo (MZSP). The Chrysidoidea collection includes a total of 75 holotypes, 791 paratypes, 2 lectotypes, 1 paralectotype and 5 syntypes of 97 nominal species. All information contained in the labels was compiled and is presented along with additional data taken from the original descriptions, MZSP records and other sources. We present also links to high resolution photographs of holotypes, lectotypes and syntypes uploaded to the Specimage, image database of the Ohio State University.