Rat-tailed
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Parhelophilus porcus
black bog fly
Parhelophilus porcus, commonly known as the black bog fly, is an uncommon syrphid fly species recorded from northern North America. Adults are flower-visiting insects that obtain nectar and pollen from blooms. The species possesses the rat-tailed larval form characteristic of related aquatic or semi-aquatic hoverflies, with an elongated breathing siphon.