Baccha
Fabricius, 1805
Baccha is a of in the Syrphinae, characterized by extremely slender, -shaped . range from 7 to 10 mm in length and exhibit -like body proportions with clear or faintly marked . The genus is distinguished by its distinctive elongate body form among syrphine .
Pronunciation
How to pronounce Baccha: //ˈbak.kʰa//
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Identification
The is immediately recognizable by its extremely slender, -shaped —at least 25 times as long as its narrowest width. The combination of short, to black with at least as deep as long; widely separated upper and lower katepisternal hair ; complete postmetacoxal bridge; and absence of posteromedial hair tuft on hind provides additional diagnostic characters. with much narrower than c at its base and reduced is also distinctive.
Images
Distribution
Records from Denmark (DK), Norway (NO), Sweden (SE), Vermont (US), and other US locations. The has a Holarctic distribution pattern based on available records.
Ecological Role
are predatory, often on , suggesting a role in of aphid .
Similar Taxa
- Other Syrphinae generaBaccha is distinguished by its extremely slender, -shaped with length-to-width ratios of 25× or greater, much more elongate than typical .
- SphaerophoriaSphaerophoria have slender but lack the pronounced shape and extreme elongation of Baccha.