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Black Blister Beetle

Epicauta pennsylvanica


All black slender beetle. I was surprised to find them this early in the year. This is a mating pair. The female is the larger one and she will drag the male around as she feeds.


Spotted on lupines in eastern Washington. Cascade foothills.

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Brian38 3 months ago

Thanks for commenting puckett.llewellyn.I'm not sure why they're on lupine. Maybe for pollen or nectar. According to BugGuide, they are associated with Asteraceae, such as goldenrods and asters.

puckett.llewellyn 3 months ago

Is she eating the Aphids off of that Beautiful Lupine?

Brian38 3 months ago

Thanks much, Neil. I wish now that I had made a video of them.

Neil Ross
Neil Ross 3 months ago

Wonderful spotting, Brian. And I love their feeding etiquette. I'm sure I've seen humans engaging in the same practice!

Spotted by

Naches, Washington, United States

Spotted on May 25, 2020
Submitted on Jun 10, 2020

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