40D_20080908020 - A wasp mimic, Spilomyia interrupta (Family Syrphidae), from Berkeley, Alameda Co., California.

40D_20090826037 - A wasp mimic, Spilomyia interrupta (Family Syrphidae), from Lake Merritt in Oakland, Alameda Co., California.

20120606_50D_0046 - A syrphid fly, Syritta pipiens (Family Syrphidae), from Richmond, Contra Costa Co., California.

20120606_50D_0053 - A syrphid fly, Syritta pipiens (Family Syrphidae), visiting Cosmos sulfureus in Richmond, Contra Costa Co., California.

20120606_50D_0068 - A syrphid fly, Syritta pipiens (Family Syrphidae), visiting Yarrow "Moonshine" in Richmond, Contra Costa Co., California.

20110510_7D_0011 - Syrphid fly, Ferdinandea croesus (Family Syrphidae), from Tilden Park near Berkeley, California.

7D_20100414066 - Bumble bee mimic, Volucella bombylans (Family Syrphidae), from the Hastings Reserve, Monterrey Co., California.

20D_20070310008 - Bumble bee mimic, Volucella bombylans (Family Syrphidae), from El Cerrito, Contra Costa Co., California.

20110327_7D_8068 - Bumble bee mimic, Volucella bombylans (Family Syrphidae), from El Cerrito, Contra Costa Co., California.

20D_20060705086 - Microdon piperi (Family Syrphidae) from the Packer Lake area in Sierra Co., California.

20D_20060705088 - Microdon piperi (Family Syrphidae) from the Packer Lake area in Sierra Co., California.

20D_20070711154 - Larva of a Microdon sp. (Family Syrphidae) in an ant nest from Yuba Pass, Sierra Co., California.