ins0515 - A giant robber fly, Promachus aldrichi sp. (Family Asilidae), feeding on an ant from Red Rock Canyon, Washoe Co., Nevada.

20120703_7D_3556 - A giant robber fly, Promachus aldrichi (Family Asilidae), feeding on a backswimmer (Family Notonectidae) from Red Rock Rd. off of HWY 395, Lassen Co., California.

20120703_7D_3580 - A giant robber fly, Promachus aldrichi (Family Asilidae), feeding on a scarab beetle (Family Scarabaeidae) from Red Rock Rd. off of HWY 395, Lassen Co., California.

20120703_7D_3593 - A giant robber fly, Promachus aldrichi (Family Asilidae), feeding on an ichneumonid wasp (Family Ichneumonidae) from Red Rock Rd. off of HWY 395, Lassen Co., California.