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The evolution of nocturnal behaviour in sweat bees, Megalopta genalis and M. ecuadoria (Hymenoptera: Halictidae): an escape from competitors and enemies?
Evolutionary transitions to dim-light foraging (predawn matinal, crepuscular, nocturnal) have occurred repeatedly in bees, and may be associated with an escape from enemies or competitors. To date,Expand
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Mexican Stingless Bees (Hymenoptera: Apidae): Diversity, Distribution, and Indigenous Knowledge
Stingless bees (Apinae: Meliponini) are highly eusocial apine bees commonly encountered in tropical and subtropical areas of the world but are more diverse in the Western Hemisphere. In Mexico,Expand
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Global invasion by Anthidium manicatum (Linnaeus) (Hymenoptera: Megachilidae): assessing potential distribution in North America and beyond
The wool carder bee, Anthidium manicatum, is the most widely distributed unmanaged bee in the world. It was unintentionally introduced to North America in the late 1960s from Europe, andExpand
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Wool carder bees of the genus Anthidium in the Western Hemisphere (Hymenoptera: Megachilidae): diversity, host plant associations, phylogeny, and biogeography
Bees are among the most important pollinators of flowering plants in most ecosystems. Recent concerns about population decline worldwide have highlighted the urgent societal need for species-levelExpand
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Taphonomic analysis of remains of mammals eaten by pumas (Puma concolor Carnivora, Felidae) in central Argentina
Prey remains recovered from puma (Puma concolor) scat were analyzed in order to identify taphonomic features produced on them by this predator. Mammal remains are abundant in puma scat, butExpand
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Growth rates, reproductive phenology, and pollination ecology of Espeletia grandiflora (Asteraceae), a giant Andean caulescent rosette.
From March 2001 to December 2002, we studied the reproductive phenology, pollination ecology, and growth rates of Espeletia grandiflora Humb. and Bonpl. (Asteraceae), a giant caulescent rosette fromExpand
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Nesting and social behavior of a wood-dwelling neotropical bee, Augochlora isthmii (Schwarz), and notes on a new species, A. alexanderi engel (Hymenoptera: Halictidae)
The nesting biology and social behavior are described for Augochlora (Augochlora) isthmii Schwarz at the species' type locality (Barro Colorado Island, Republic of Panama). Bees nested in a fallenExpand
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African and Southeast Asian Chalicodoma (Hymenoptera: Megachilidae): New Subgenus, New Species, and Notes on the Composition of Pseudomegachile and Largella
Abstract. A new subgenus, Lophanthedon subg. nov., is described and figured for five species of distinctive Southeast Asian bees in the genus Chalicodoma Lepeletier de Saint Fargeau (Megachilinae:Expand
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Taxonomic notes on the small resin bees Hypanthidioides subgenus Michanthidium (Hymenoptera, Megachilidae)
Abstract As part of ongoing investigations on anthidiine bees, the type of Anthidium albitarse Friese was found to be conspecific with one of the two species of the small resin bees HypanthidioidesExpand
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Ecology and Nesting Behavior of Bombus atratus Franklin in Andean Highlands (Hymenoptera: Apidae)
The neotropical bumble bee Bombus (Fervidobombus) atratus Franklin is widely dis- tributed in South America ranging from tropical and subtropical lowlands to high altitudes in the Andes. Most of itsExpand
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