Phylogenetic relationships of genera Allograpta, Sphaerophoria and Exallandra (Diptera, Syrphidae) were analyzed based on sequence data from the mitochondrial protein-coding gene cytochrome c oxidase subunit I (COI) and the nuclear 28S and 18S ribosomal RNA genes. The three genera are members of the subfamily Syrphinae, where nearly all members feed as larvae on soft-bodied Hemiptera and other ...

A new interaction between insects and carnivorous plants is reported from Brazil. Larvae of the predatory flower fly Toxomerus basalis (Diptera: Syrphidae: Syrphinae) have been found scavenging on the sticky leaves of several carnivorous sundew species (Drosera, Droseraceae) in Minas Gerais and São Paulo states, SE Brazil. This syrphid apparently spends its whole larval stage feeding on prey tr...

The exotic syrphid Eumerus strigatus (Fallén) is reported for the first time in Argentina. Individuals of this species were captured two sites distant more than 1,000 km (Villalonga, province Buenos Aires, and Pocito, San Juan) associated with onion crops (Allium cepa L.). We propose monitoring phytophagous hover fly because its potential risk important horticultural crop

0

The influence of different semi-natural surroundings adjacent to apple orchards on the occurrence predatory syrphids and biological control Aphis pomi Deg. Dysaphis plantaginea Pass. was compared. Two methods catching hoverflies were used: yellow traps collect adults hand picking get larvae from aphid colonies. A total 1029 Syrphidae (26 species belonging 14 genera) subfamily Syrphinae collecte...