What's That Bug? does not endorse extermination

red copper bug with wings feathery antennae
Mon, Jul 6, 2009 at 7:28 PM
This was found on our cedar picnic table on June 30th in our front yard, flowers, woods around, We are about 40 acres from a lake. Stones in driveway. Tall grasses. Plenty of wildflowers, fruit trees, vegetables.
Heather
Northern Wisconsin

Fire Colored Beetle

Fire Colored Beetle

Hi Heather,
You have submitted a photo of a Fire Colored Beetle in the family Pyrochroidae.  We believe it is in the genus Dendroides, probably Dendroides concolor based on an image posted to BugGuide.  The westernmost sighting of this species posted to BugGuide is from Ohio, but that does not necessarily exclude this species as your individual.  A similar looking western species is Dendroides concolor, but BugGuide reports that species from Oregon and Washington, and we feel it is a less likely candidate.  BugGuide has this to say about the family in general:  “Adults are active at night, and may be attracted to lights.  Some species may be attracted to fermenting baits. Male pyrochroid beetles seek out blister beetles, climb onto them and lick off the cantharidin the blister beetles exude. Not only have these beetles developed a resistance to the cantharidin, they use the blistering agent to impress a female of their own species who then mates with them, whereupon most of the cantharidin is transfered to the female in the form of a sperm packet. The eggs the female subsequently lays are coated with cantharidin to protect them from being eaten before they hatch.”  The pectinate antennae indicate that your individual is a male.

What's That Bug? does not endorse extermination

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