What's That Bug? does not endorse extermination

Subject: What type of Mayfly is this?
Location: Columbia, MO
April 29, 2013 5:17 pm
A fly fishing buddy and I are trying to identify the name of this mayfly. Any help would be appreciated. I took this picture on my back porch in Columbia, MO on 4/29/13 at 7pm.
Signature: DocChad

Mayfly

Possibly Flatheaded Mayfly

Hi DocChad,
We tend to be amateur generalists here at What’s That Bug? and we are not very good at keying out difficult species.  With that said, this Mayfly appears to be very similar to this image posted to BugGuide that is identified as being in the family Heptageniidae, the Flatheaded Mayflies.

Flatheaded Mayfly, we believe.

Flatheaded Mayfly, we believe.

What's That Bug? does not endorse extermination
Location: Columbia, Missouri

One Response to Flatheaded Mayfly, we believe

  1. We have the solid black ones . Michigan has the clouds of them that make your windshield icky.

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