Results 1 to 10 of about 426 (162)

Sleeping aggregation of an oil-collecting bee, Centris (Paracentris) xanthomelaena Moure & Castro (Hymenoptera: Apidae: Centridini)

Sociobiology, 2018
Sleep aggregations have been registered for some species of solitary bees and wasps. In this note we describe the aggregation behaviour of Centris xanthomelaena Moure & Castro bees in their inactive periods.
Heberson Martins, Patricia Rebouças, Vinina Ferreira   +2 more
doaj   +1 more source

Déficit de polinização da aceroleira no período seco no semiárido paraibano

Revista Brasileira de Fruticultura, 2011
A aceroleira é uma importante frutífera tropical que pode produzir frutos o ano todo na região semiárida do Nordeste do Brasil, caso seja utilizada a irrigação.
Rozileudo da Silva Guedes, Fernando César Vieira Zanella, Celso Feitosa Martins, Clemens Schlindwein   +3 more
doaj  

Self-sterility in the hexaploid Handroanthus serratifolius (Bignoniaceae), the national flower of Brazil

Acta Botânica Brasílica, 2013
Polyploidization is common among angiosperms and might induce typically allogamous plants to become autogamous (self-compatible, relying on sexual self-fertilization) or apomictic (achieving asexual reproduction through seeds).
Mariana Ferreira Alves, Mariana Oliveira Duarte, Paulo Eugênio Oliveira, Diana Salles Sampaio   +3 more
doaj   +1 more source

Deposições de Óleo por Fêmeas de Centris analis (Fabricius) (Hymenoptera: Apidae: Centridini) Parasitadas por Physocephala spp. (Diptera: Conopidae)

EntomoBrasilis, 2014
O objetivo deste trabalho foi identificar comportamentos de deposição de óleo realizados pelas fêmeas da abelha solitária Centris analis (Fabricius), parasitadas por Physocephala spp.
Ricardo Marques Couto, Evandro Camillo
doaj   +3 more sources

First Record of Female Philopatry in the Tribe Centridini (Hymenoptera: Apidae)

Sociobiology
This study addresses the behavior and ecology of the solitary bee Centris aenea. The objective was to verify the philopatry of this bee’s females. The study was carried out in a nest aggregation in the Restinga area in Coroa Vermelha, Santa Cruz de ...
Dinah Halos Mota Monteiro, Maria Eugênia Pereira Gonçalves, Welber da Costa Pina   +2 more
doaj   +1 more source

Pollination biology of melittophilous legume tree species in the Atlantic Forest in Southeast Brazil

Acta Botânica Brasílica, 2018
This study describes the floral phenology and morphology, reproductive biology and pollinators for eight legume tree species, Schizolobium parahyba, Senna macranthera, and Senna multijuga (Caesalpinioideae), as well as Andira fraxinifolia, Lonchocarpus ...
Mardiore Pinheiro, Vinicius Lourenço Garcia de Brito, Marlies Sazima   +2 more
doaj   +1 more source

Ocorrência de Centris (Hemisiella) vittata Lepeletier (Hymenoptera: Apidae: Centridini) no Cerrado s.l. do nordeste do Maranhão, Brasil Occurrence of Centris (Hemisiella) vittata Lepeletier (Hymenoptera: Apidae: Centridini ) in the Cerrado s.l. Bioma of Maranhão, Northeastern Brazil

Acta Amazonica, 2007
Fêmeas de Centris vittata Lepeletier foram observadas visitando flores de Byrsonima sp. e nidificando em troncos de Astronium sp. (Anacardiaceae) em uma área de Mata Mesofítica, em Urbano Santos (3º 12' 28''S; 43º24'12''), Maranhão, Brasil.Females of ...
Marina da Costa Ramos, Márcia Maria Correia Rêgo, Patrícia Maia Corrêa de Albuquerque   +2 more
doaj   +1 more source

The species of the bee genus Centris of the “hyptidis group” revisited with the description of Centris (Anisoctenodes) new subgenus (Hymenoptera: Apidae: Centridini)

European Journal of Taxonomy, 2020
In this paper, the species of Centris of the “hyptidis group” are revisited, proposing to recognize them as members of Anisoctenodes subgen. nov., a new subgenus supported by morphological and molecular data. The species included in this new taxon are C. 
Felipe Vivallo
doaj   +1 more source

Host records and cleptoparasitic behavior of the cuckoo bee Mesonychium asteria (Smith) (Apidae, Ericrocidini) in nests of Centris xanthomelaena Moure & Castro, (Apidae, Centridini)

Sociobiology, 2020
Mesonychium asteria (Smith) is a cleptoparasitic bee with occurrence restricted to South America. In this study, we provide new information related to the host association and cleptoparasitic behavior of this species in nests of Centris xanthomelaena ...
Herbeson Ovidio de Jesus Martins, Patricia Luiza de Oliveira Rebouças, Vinina Silva Ferreira   +2 more
doaj   +1 more source

Two new Brazilian species of oil-collecting bees of the genus Centris (Ptilotopus) Klug (Hymenoptera: Apidae)

Revista Chilena de Entomología, 2019
Centris (Ptilotopus) auriceps sp. nov. and C. (Ptilotopus) neglecta sp. nov. from South America are described and illustrated. The description of the first species is based on a single male specimen collected in Pará state, northern Brazil, while the ...
Felipe Vivallo
doaj