Results 121 to 130 of about 17,857 (273)

Sex-biased parental care and sexual size dimorphism in a provisioning arthropod [PDF]

open access: yes, 2015
The diverse selection pressures driving the evolution of sexual size dimorphism (SSD) have long been debated. While the balance between fecundity selection and sexual selection has received much attention, explanations based on sex-specific ecology have ...
A Herrel   +87 more
core   +1 more source

Ecological impact and population status of non-native bees in a Brazilian urban environment

open access: yesRevista Brasileira de Entomologia
The introduction of species is an important global threat to native ecosystems and yet little is known about invasion risks of non-native bees. Moreover, urbanization is increasing rapidly around the world with impact on the bee fauna.
Letícia Vanessa Graf   +2 more
doaj   +1 more source

Revisión del género de abejas Ceratina, subgénero Rhysoceratina (Hymenoptera, Apidae, Xylocopinae) [PDF]

open access: yes, 2016
El subgénero Rhysoceratina de Ceratina está restringido a América del Sur, con especies conocidas de Argentina, Brasil, Colombia, Paraguay y Uruguay. Se reconocen nueve especies, de la cuales cuatro se describen como nuevas: C. canaliculata, C.
Roig Alsina, Arturo Hernan
core   +1 more source

NOTAS BIOLÓGICAS Y TAXONÓMICAS SOBRE LOS ABEJORROS DEL MARACUYÁ DEL GÉNERO Xylocopa (HYMENOPTERA: APIDAE, XYLOCOPINI) EN COLOMBIA

open access: yesActa Biológica Colombiana, 2009
RESUMEN Presentamos información sobre los hábitos de nidificación de la abeja carpintera Xylocopa (Neoxylocopa) lachnea en la cordillera Oriental de Colombia.
MARGARITA GONZALES, YURANNY CUELLAR
doaj  

Contribution to bee fauna (Hymenoptera, Apoidea) of Poland. IV [PDF]

open access: yes, 2000
Hyleus lepidulus Cockerell and Eucera pollinosa Smith (= E. polonica Ruszkowski, syn. nov.) are recorded for the first time from Poland. New records of further 5 rare species are given.Zadanie pt.
Banaszak, Józef
core  

Revision of the genus Eutyglossina Cockerell (Apoidea : Colletidae)

open access: yesAustralian Journal of Zoology, 1968
The genus Euryglossina Cockerell, 1910, is revised. Fifty species are recognized including the following 27 species described as new : E. kellyi, E. stygica, E. healesvillensis, E. douglasi, E. lobiocula, E. gigantocephala, E. nigra, E. atra, E. glenmorganensis, E. bowenensis, E. townsvillensis, E. pulchra, E. polita, E. grandigena, E. angulifacies,
openaire   +3 more sources

Target enrichment of ultraconserved elements from arthropods provides a genomic perspective on relationships among Hymenoptera

open access: yes, 2014
Gaining a genomic perspective on phylogeny requires the collection of data from many putatively independent loci collected across the genome. Among insects, an increasingly common approach to collecting this class of data involves transcriptome ...
Brady, Seán G.   +3 more
core   +2 more sources

TGLE Vol. 52 Nos. 1 & 2 Full Issue [PDF]

open access: yes, 2019
Full issue for TGLE Vol. 52 Nos. 1 &

core   +1 more source

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