This species is found throughout North America. The larvae are "rat-tailed maggots", found in organically-rich aquatic habitats (Stubbs & Falk, 1983).

 

Distribution in Los Angeles County: Widespread

 

Distribution in the Santa Monica Mountains: Tapia Park, Westwood, Westwood Hills

 

Literature cited:

Stubbs, A. E. & S. J. Falk. 1983. British hoverflies: an illustrated identification guide. British Entomological and Natural History Society, Reading. 253 pp, 12 plates.