Results 21 to 30 of about 1,275 (133)

Ecological and seasonal patterns in the diversity of a species-rich bee assemblage (Hymenoptera: Apoidea: Apiformes)

open access: yesEuropean Journal of Entomology, 2005
Meaningful ecological studies on insect communities require sampling protocols that take into consideration temporal fluctuations in abundance and species composition. Bees with their specific requirements for nutrition and nesting are good indicators of
Sabine OERTLI   +2 more
doaj   +1 more source

Cocoon morphology of Bicyrtes variegatus (Oliver, 1789) (Hymenoptera: Crabronidae), with notes on habitat and biological interactions

open access: yesRevista Chilena de Entomología, 2021
A morphological study on the cocoon of Bicyrtes variegatus (Oliver, 1789) is presented based on specimens collected in Center-West Brazil. Notes on nesting habitat is provided.
Sandor Christiano Buys   +1 more
doaj   +1 more source

Diversity and Evolution of pogo and Tc1/mariner Transposons in the Apoidea Genomes

open access: yesBiology, 2021
Bees (Apoidea), the largest and most crucial radiation of pollinators, play a vital role in the ecosystem balance. Transposons are widely distributed in nature and are important drivers of species diversity.
Yibing Liu   +7 more
doaj   +1 more source

Contribution to Bee Fauna (Hymenoptera: Apoidea: Anthophila) of Poland. VI. The Genus Andrena Fabricius, 1775. PART 2

open access: yesJournal of Apicultural Science, 2018
The paper presents new records of the following six very rare or scarcely recorded species of short-tongued bees of the genus Andrena Fabricius, 1775 in Poland: A. (Simandrena) congruens Schmiedeknecht, 1883; A.
Wiśniowski Bogdan   +3 more
doaj   +1 more source

Tachinidae (Diptera) as Floral Visitors and Pollinators in Natural and Managed Systems

open access: yesEntomologia Experimentalis et Applicata, EarlyView.
We review the roles of bristle flies (Tachinidae) as pollinators in natural and managed systems. We find that most tachinid genera visit flowers and that floral‐adapted mouthparts have evolved repeatedly many times in the family. We review patterns of floral specificity and assess the efficacy of tachinids as pollinators with case studies.
John O. Stireman III   +1 more
wiley   +1 more source

Forest edges buffer effects of agricultural management on bee–plant interaction networks

open access: yesEcological Entomology, EarlyView.
Agricultural management effects: Organic and conventional crop margins host similar bee and plant species, but network structure differs: organic farms exhibit higher interaction diversity, conventional farms higher connectance. Role of forest edges: Native forest edges stabilize bee–plant networks by providing continuous floral resources and suitable ...
Samantha Marx de Castro   +6 more
wiley   +1 more source

Influence of elevation, climate, snowmelt and floral abundance on body size of solitary bees

open access: yesEcological Entomology, EarlyView.
We measured body size in bee species from a 10‐year specimen collection from Colorado sub‐alpine meadows (2450–3450 m) and tested effects of elevation and annual snowmelt, climate and floral abundance. 2 out of 4 bee species collected across a broad elevation range showed a decline in body size with higher elevations; the other two showed no effect ...
Lachlan C. Jones   +5 more
wiley   +1 more source

Catálogo de los Megachilidae del Mediterráneo occidental (Hymenoptera, Apoidea). I. Osmiini

open access: yesGraellsia, 2006
El catálogo objeto de este trabajo es una primera entrega de una serie de tres que los autores han realizado sobre la familia Megachilidae en el área mediterránea occidental, como base de la revisión que se está llevando a cabo sobre los megaquílidos ...
C. Ornosa   +2 more
doaj   +1 more source

Not all crickets are equal: selective shrike predation highlights the conservation value of diverse arthropod communities to grassland birds

open access: yesIbis, EarlyView.
Understanding dietary preferences and prey selection is pivotal for interpreting the ecology and conservation needs of threatened species. We investigated the diet composition and prey selection of the Red‐backed Shrike Lanius collurio in a montane grassland of the central Italian Apennines, with special regard to sex‐related differences and the ...
Leonardo Ancillotto   +8 more
wiley   +1 more source

Description of the male Colletes vicugnensis Rojas and Toro (Hymenoptera: Colletidae) with an updated key to the males of the Colletes species with a metallic-blue metasoma from Chile

open access: yesRevista Chilena de Entomología, 2019
The male of the rare bee species Colletes vicugnensis Rojas and Toro is herein described and illustrated for the first time. Also, an identification key to the known males of the species of the genus with a metallic-blue metasoma found in Chile is ...
Rafael R. Ferrari
doaj   +1 more source

Home - About - Disclaimer - Privacy