the diversity and abundance of bees associated with alfalfa and onion fields in mashhad and chenaran were evaluated from mid june until late october 2010. considering the type and flowering period of the studied crops, by using a standard sweeping net, either a weekly or biweekly sampling program of apoid bees were carried out in selected fields for both crops. as a result, 17 species of 15 gen...

New phylogenomic analyses suggest that ants and Apoidea (hunting wasps and bees) are more closely related than we had previously believed.

Los polinizadores para el cultivo de fibra algodón están infrautilizados a pesar la evidencia que polinización cruzada puede aumentar los rendimientos. Además, investigación existente ignora en gran medida potencial insectos distintos las abejas (Hymenoptera: Apoidea: Anthophilia) proporcionar servicios algodón. Observamos chinches plantas, saltahojas del algodón, Pseudatomoscelis seriatus (Reu...

Abstract Land-use change, including urbanization, is known to affect wild bee (Hymenoptera: Apoidea) diversity. However, while previous studies have focused on differences across local urbanization gradients, the best of our knowledge, none among cities at a wide geographical scale. We here used published data for communities in 55 globe, order explore how city traits (population density, size,...

Available information about the bees of the genus Colletes from China is summarized. Currently, 66 species are recorded from China, of which two species, Colletes linzhiensis sp. nov. and C. spinatus sp. nov., are described as new. Type specimens are deposited in the Insect Collection of the Institute of Zoology, Chinese Academy of Sciences, Beijing, China. Thirteen species are recorded for Chi...

Forests provide potentially important bee habitat, but little research has been done on forest bee diversity and the relative effectiveness of bee sampling methods in this environment. Bee diversity and sampling methodology were studied in an Illinois, USA upland oak-hickory forest using elevated and ground-level pan traps, malaise traps, and vane traps. 854 bees and 55 bee species were collect...