Mountain Meadows Reservoir area next to Westwood, elevation 5050ft, Lassen County, California, USA
July 20, 2015
Size: Body length 14mm
ID to genus was determined via "Key to the genera of nearctic Syrphidae" - see here:
(1).
See Genus Chrysotoxum page at "Key to the genera of nearctic Syrphidae"
here.
Possibly species
Chrysotoxum chinook, see here:
(2) - confirmation or otherwise appreciated - thanks.