Sphecomyia columbiana
Vockeroth, 1965
Columbian Yellowjacket Fly
Sphecomyia columbiana is a of syrphid fly in the Syrphidae, described by Vockeroth in 1965. The Sphecomyia is known for remarkably convincing mimicry, particularly of yellowjackets. The specific epithet 'columbiana' refers to its known distribution in Canada.
Pronunciation
How to pronounce Sphecomyia columbiana: /ˌsfɛkoʊˈmaɪə kəˌlʌmˈbiænə/
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Identification
Members of the Sphecomyia are distinguished from other syrphid flies by their exceptionally long and thick , which more closely resemble those of than typical dipteran antennae. They are approximately the size of a yellowjacket. The -level identification of S. columbiana requires microscopic examination; the genus contains multiple species with similar general appearance.
Images
Distribution
Canada.
Ecological Role
As a member of Syrphidae, the likely contributes to pollination as an and may serve as prey for various . The is known for of vespid , which may reduce pressure.
Similar Taxa
- Sphecomyia vittataCongeneric with similar yellowjacket-mimicking appearance and ; both share the distinctive long and -like pattern. S. vittata has been more frequently documented and observed in the eastern United States.
- Vespula maculifrons (Eastern Yellowjacket)The putative model for Sphecomyia mimicry; queens of this are similar in size and general coloration. The fly can be distinguished by its single pair of wings (Diptera), long but non-elbowed , and lack of a constricted wasp waist.
More Details
Taxonomic note
Described by John R. Vockeroth in 1965. The Sphecomyia belongs to the subtribe Criorhinina within the tribe Milesiini.