Results 21 to 30 of about 4,938 (231)

Barefoot Trees for Bees: Nesting Site Characteristics of the Ground-Nesting Bee <i>Andrena vaga</i> in an Urban Environment. [PDF]

open access: yesEcol Evol
Andrena vaga nesting sites were preferably located under canopy cover. The soils of the nesting sites were warmer and drier and showed less penetration resistance and vegetation cover compared to uncolonized control areas. Experimental bare ground plots located within control areas did not provoke colonization of Andrena vaga, assumingly due to social ...
Gardein H   +3 more
europepmc   +2 more sources

A new species of the genus Colletes Latreille, 1802 (Hymenoptera: Colletidae) from Azerbaijan [PDF]

open access: yesКавказский энтомологический бюллетень, 2015
Colletes dlusskyi sp.  n. is described and illustrated from Azerbaijan (Nakhchivan Autonomous Republic).
M. Kuhlmann, M.Yu. Proshchalykin
doaj   +1 more source

Phenology of the specialist bee Colletes hederae and its dependence on Hedera helix L. in comparison to a generalist, Apis mellifera

open access: yesArthropod-Plant Interactions, 2021
Colletes hederae, the ivy bee, (Hymenoptera: Colletidae) has undergone large range expansions in Europe in recent years, including colonising Britain in 2001 with its original distribution limited to Western mainland Europe and the Channel Islands. It is
G. Hennessy   +6 more
semanticscholar   +1 more source

Erster Nachweis der Solitärbienenart Colletes halophilus Verhoeff, 1944 in Schleswig-Holstein (Hymenoptera: Colletidae)

open access: yesFaunistisch-Ökologische Mitteilungen, 2021
Die an der Küste endemische Seidenbienenart Colletes halophilus Verhoeff, 1944 konnte 2015 erstmals am Deich der Eidermündung (Nordfriesland) für Schles- wig-Holstein nachgewiesen werden. In 2017 konnte zusätzlich in Salzwiesen vor St.
Jorinde Klammer   +2 more
semanticscholar   +1 more source

Narrow flower specialization in two European bee species of the genus Colletes (Hymenoptera: Apoidea: Colletidae)

open access: yesEuropean Journal of Entomology, 2003
Colletes anchusae Noskiewicz, 1924 and C. wolfi Kuhlmann, 1999 (Colletidae) are closely related bee species with vicariant distributions, the former occurring in east and southeast Europe and Turkey, the latter restricted to the Italian peninsula ...
Andreas MÜLLER, Michael KUHLMANN
doaj   +1 more source

A record of bilateral gynandromorphism in Epeolus (Hymenoptera: Apidae: Nomadinae) [PDF]

open access: yes, 2018
The discovery of a gynandromorph of a North American Epeolus Latreille is reported. A specimen of E. flavofasciatus Smith from Flagstaff, Arizona, USA discovered in the collection of the American Museum of Natural History (AMNH) exhibits male-specific ...
Onuferko, Thomas M
core   +2 more sources

Extinctions of aculeate pollinators in Britain and the role of large-scale agricultural changes [PDF]

open access: yes, 2014
Pollinators are fundamental to maintaining both biodiversity and agricultural productivity, but habitat destruction, loss of flower resources, and increased use of pesticides are causing declines in their abundance and diversity. Using historical records
Biesmeijer   +8 more
core   +1 more source

Briófitas do parque nacional de sete quedas, Guaíra, PR, Brasil Bryophytes from the National Park of Sete Quedas, Guaíra, Paraná, Brazil

open access: yesActa Botânica Brasílica, 2000
Foram encontradas no Parque 65 espécies de briófitas, sendo 24 (14 novas para o Estado) de Hepatophyta, distribuídas em seis famílias e 14 gêneros, 41 espécies (sendo 12 novas para o Estado) de Bryophyta em 23 famílias e 30 gêneros e Erytrophyllastrum ...
Olga Yano, Austher G. Colletés
doaj   +1 more source

The evolutionary history of the cellophane bee genus Colletes Latreille (Hymenoptera: Colletidae): molecular phylogeny, biogeography and implications for a global infrageneric classification.

open access: yesMolecular Phylogenetics and Evolution, 2020
Colletes Latreille (Hymenoptera: Colletidae) is a diverse genus with 518 valid species distributed in all biogeographic realms, except Australasia and Antarctica.
R. Ferrari   +3 more
semanticscholar   +1 more source

Description of a gynander of Colletes hedini (Hymenoptera: Colletidae) from the Qinghai-Tibetan Plateau, China: the first record of gynandromorphism for the genus after 30 years

open access: yesFar Eastern entomologist, 2021
The first known gynander of the East Asian cellophane bee Colletes hedini Kuhlmann (Hymenoptera: Colletidae) is described and imaged. We provide an illustrated differential diagnosis based on the terminalia, which are entirely male.
R. Ferrari, T. Onuferko, C. Zhu
semanticscholar   +1 more source

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