Syrphus torvus Osten Sacken, 1875
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Identification
Hairy eyes, yellow bands of 3rd and 4th targa are complete, wing membrane entirely trichose and hind femur black on about basal three-quarters (Vockeroth 1992).
(Source: Entomology collection (E.H. Strickland Entomological Museum) )
Length:8.6-13.3 mm (Vockeroth 1992)
Biology
Larvae of Syrphus torvus feed on several species of aphids (Láska and Starý, 1980).
Distribution
Alaska, Canada, South to California, Louisiana, Mississippi, Europe, Asia (Vockeroth, J.R. 1992).
Taxonomic Hierarchy
Kingdom Animalia
Phylum Arthropoda
Subphylum Hexapoda
Class Insecta
Subclass Pterygota
Infraclass Neoptera
Order Diptera
Suborder Brachycera
Infraorder Muscomorpha
Family Syrphidae
Subfamily Syrphinae
Tribe Syrphini
Genus Syrphus
Species
Syrphus torvus Osten Sacken, 1875