The causes and consequences of flower constancy have been the focus of many studies, but almost all have examined the foraging behavior of bumblebees, honeybees, or butterflies. We test whether constancy occurs in an overlooked group of pollinators, the syrphid flies. Foraging sequences of wild flies of two species, Episyrphus balteatus and Syrphus ribesii, were examined when visiting flowers i...

Sustainability of agroecosystems depends on the ecosystem services, provided by beneficial organisms, such as syrphids (Diptera: Syrphidae) acting other-insect predators and pollinators in different crops. In case olive groves, are important pests endangered continuous intensification agriculture, including landscape simplification. this work, effect structure abundance species richness agroeco...

Bu çalışmanın amacı 2020-2021 yılları bahar ve yaz aylarında Çanakkale ili meyve bahçelerindeki yumuşak sert çekirdekli ağaçları yabancı otlarda beslenen yaprakbitleri (Hemiptera: Aphididae) üzerindeki predator syrphid türlerinin (Diptera: Syrphidae) belirlenmesidir. Toplamda 6 cinse bağlı türü 15 yaprakbiti tespit edilmiştir. En yaygın türleri 9 üzerinde belirlenen Episyrphus balteatus de Geer...

Agroecosystems produce profound alterations on the structure and functioning of original environment, mainly due to reduction biodiversity. Flower flies (Diptera: Syrphidae) are potentially useful organisms for diverse ecosystem services they provide. We studied syrphids collected in a Pampean agroecosystem assess richness, abundance, host plants, could offer. were represented by three subfamil...

Alternative strategies to the common practice of spraying with insecticide in order to control the rosy apple aphid Dysaphis plantaginea (Pass.) (Homoptera: Aphididae) are required. Biological control by natural enemies is a possible tool. In Asturies, despite the tradition of growing local cider apple trees, there are no studies about the community of D. plantaginea predators and their impact ...

Anacharoides Cameron is revised and six species are recognized: A. nicknacki Buffi ngton & van Noort, sp. n., A. pallida Quinlan, A. paragi Benoit, A. quadrus Quinlan, A. striaticeps Cameron and A. stygius Benoit. A key to species is provided. Anacharoides striaticeps was determined to be a variable species, and consequently a number of names have been proposed for this species. Here we clarify...

abstract the syrphidae family with almost 6000 described species, 15 tribes and 3 subfamilies is one of the largest families of diptera. they known as hoverflies or flowerflies. the larvae of subfamily syrphinae are considered the specialized aphidophagous predators play an important role in the reduction of aphid populations in agroecosystems. almost all the adult syrphids feed on pollen or ne...