Mexican Cactus Fly

Subject:  bee fly
Geographic location of the bug:  San Diego, California
Date: 11/04/2017
Time: 03:56 PM EDT
Size of a medium bumblebee. There were a dozen working the flowers in the photo.
How you want your letter signed:  Gerald Friesen

Mexican Cactus Fly

Dear Gerald,
This is not a Bee Fly.  It is a Mexican Cactus Fly, a species of Flower Fly or Hover Fly in the family Syrphidae.  According to BugGuide:  “Larvae feed on rotting cactus.”

Mexican Cactus Fly
Photo of author


BugMan aka Daniel Marlos has been identifying bugs since 1999. is his passion project and it has helped millions of readers identify the bug that has been bugging them for over two decades. You can reach out to him through our Contact Page.

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