Subject: What kind of insect is this?
Location: Chino Valley, Arizona
September 2, 2012 10:30 am
Hello bug expert,
I live in Chino Valley, Arizona which is 25 miles north of Prescott in North Central Arizona. Elevation 4800’. Photo taken in late August. These bugs are crawling on the ground but appear to have undeveloped wings. They suddenly appeared in numbers of approximately 1 in a radius of 20’. They are approximately 1” long.
Signature: Roger Eads

Blister Beetle

Hi Roger,
This is a Blister Beetle in the genus
Megetra, and according to BugGuide, the genus is:  “Restricted to Chihuahuan Desert of the USA (TX, NM, and extreme southeastern AZ) and Mexico (where most of this desert region is located).”

Blister Beetle

Thanks Daniel,
I have seen blister beetles but never like this.  These have a bulbous wasp-like abdomen.  The blister beetles I’ve seen are flat.  These show up every year in August during the monsoons and disappear within a month.
I don’t like the thought of blister beetles because we have horses.
Thanks again,

Location: Arizona

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