Sciomyzidae is a family of true flies commonly known as 'marsh flies' or 'snail-killing flies'. Comprising over 600 species in approximately 66 genera.
Flies in the family Syrphidae. They are often seen hovering or sipping nectar at flowers; the adults of many species feed mainly on nectar and pollen, while the larvae eat a wide range of foods.
This the second largest family of flies with 8,200 species. All are parasitoids (the larvae develop inside a living host, ultimately killing it), and a few that are parasitic (do not kill the host).
