Results 41 to 50 of about 405 (156)

Tropical Bee Assemblage Diversity Decreases With Elevation While Body Size Increases

Biotropica, Volume 58, Issue 4, July 2026.
Photos of bee specimens collected in the Colombian Andes across a nearly 3000 m elevational cline. They are arranged to illustrate both the decline in richness with elevation and the increase in community average body size with elevation. ABSTRACT Elevation gradients are powerful drivers of changes in species composition, richness, and functional ...
Nash E. Turley, Harold Pulido‐Guarín, Daniel Nossa‐Suárez, Gabriella Hoffmann, Ruben D. Martín‐Rojas, Lucia Aguilar‐Benavides, Margarita M. López‐Uribe   +6 more
wiley   +1 more source

The orchid bees (Hymenoptera, Apidae, Euglossina) in a forest fragment from western Paraná state, Brazil

Papéis Avulsos de Zoologia, 2014
An orchid bee inventory was carried out in Parque Estadual São Camilo, Palotina, Paraná (Brazil); conservation unit with about 400 hectares of Semidecidual Seasonal forest.
Rodrigo B. Gonçalves, Vanessa L. Scherer, Priscila S. Oliveira   +2 more
doaj   +1 more source

Influence of forest cover and sex on wing size and shape of a spider‐hunting wasp in the Brazilian Atlantic forest

Ecological Entomology, Volume 51, Issue 1, Page 165-176, February 2026.
Forest cover significantly influences the wing shape of female Trypoxylon lactitarse. Females exhibit longer and narrower wings, linked to greater flight efficiency and dispersal. Sexual dimorphism indicates that females respond differently to ecological pressures, underscoring the role of forest cover in species persistence.
Alexsandra de Lima Klates, Jean Pablo Alves de Deus, Milton Cezar Ribeiro, Maria Luisa Tunes Buschini   +3 more
wiley   +1 more source

ASPECTOS DA RIQUEZA E DISTRIBUIÇÃO DE ABELHAS EUGLOSSINI (Hymenoptera: Apidae) NO BRASIL

Caminhos de Geografia, 2012
Este estudo objetivou identificar e analisar a composição de espécies da Tribo Euglossini (Hymenoptera: Apidae) ocorrentes no território brasileiro, quanto à riqueza, biogeografia e similaridade tendo como base trabalhos publicados.
José Neiva Mesquita Neto, Carlos de Melo e Silva Neto, Edivane Cardoso da Silva, Maria Inês Cruzeiro Moreno   +3 more
doaj  

Evidence of separate karyotype evolutionary pathway in Euglossa orchid bees by cytogenetic analyses

Anais da Academia Brasileira de Ciências, 2013
Euglossini are solitary bees considered important pollinators of many orchid species. Information regarding chromosome organization is available for only a small number of species in this group.
ANDERSON FERNANDES, HUGO A. WERNECK, SILVIA G. POMPOLO, DENILCE M. LOPES   +3 more
doaj   +1 more source

Air pollution and its multifaceted effects on insect pollinators: A review

Ecological Entomology, Volume 51, Issue 1, Page 1-17, February 2026.
Air pollution disrupts plant‐pollinator interactions by impairing floral signal transmission, altering foraging behaviour, and reducing pollinator fitness, flight efficiency, reproduction and survival, posing serious threats to ecological stability.
Hilke Hollens‐Kuhr, Anika K. Gathof, Anita J. Grossmann, Sascha Buchholz   +3 more
wiley   +1 more source

Floral Handedness in Mormodes Orchids: Revisiting Charles Darwin's Observations

Biotropica, Volume 57, Issue 6, November 2025.
In this study, we scrutinized floral enantiostyly in Mormodes orchids, a unique trait within Orchidaceae first observed by Charles Darwin. We hypothesize how intricate column twisting drives strategic pollinarium placement onto opposite sides of the thorax of male euglossine bees, enhancing cross‐pollination.
Arthur Domingos‐Melo, Dhenife Mirelly Silva, Paulo Milet‐Pinheiro   +2 more
wiley   +1 more source

Solitary oil‐collecting bee in cities: Habitat suitability and lack of population structuring in Centris analis

Insect Conservation and Diversity, Volume 18, Issue 6, Page 982-996, November 2025.
Lack of genetic population structure in urban populations of Centris analis. Low morphological differentiation across four phytogeographical regions in Brazil. Monogyny‐monandry mating system in C. analis. Abstract The decline of insect populations worldwide has raised concerns about the negative impact on ecosystem services, particularly pollination ...
Leandro Pereira Rezende, Cintia Akemi Oi, Katia Maria Ferreira, Isabel Cristina de Godoy, Marco Antonio Del Lama   +4 more
wiley   +1 more source

The magnitude of cryptic insect diversity in one tropical rainforest

Insect Conservation and Diversity, Volume 18, Issue 6, Page 1163-1174, November 2025.
We detected 214 cryptic species out of a total of 2006 species (10.6%) examined from 22 focal insect taxa in 1500 ha tropical rainforest in Panama. The percentage of cryptic species varied greatly among assemblages (0%–19%), with half of the assemblages devoid of cryptic species and the highest proportions of cryptics in Pieridae and Formicidae ...
Yves Basset, Greg P. A. Lamarre, David A. Donoso, Daniel Souto‐Vilarós, Filonila Perez, Ricardo Bobadilla, Yacksecari Lopez, José Alejandro Ramírez Silva, Héctor Barrios   +8 more
wiley   +1 more source

Preliminary study of insect attraction by a mixture of semiochemicals containing 1,2,4-Trimethoxybenzene in domestic citric-culture

Química Nova, 2010
In this work we describe a new efficient strategy for the preparation of 1,2,4-trimethoxybenzene (3) in 56% overall yield. The compound 3 was used in a preliminary study of insect attraction by a mixture of semiochemicals called TIV, composed of indol (1)
Ana Paula L. Alves, José Augusto B. de C. Júnior, Glaucia B. A. Slana, Jari N. Cardoso, Rosangela S. C. Lopes, Claudio C. Lopes   +5 more
doaj   +1 more source