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Photo#368194
Orange-spotted Beetle - Brachiacantha

Orange-spotted Beetle - Brachiacantha
Black Canyon of the Gunnison National Park, Montrose County, Colorado, USA
June 13, 2009
Kind of looked like Brachiacantha dentipes, but this was in far western Colorado (guide says "west to Nebraska, New Mexico" so I suppose they can occur there?). Not a great picture, just figured it may be useful for data purposes depending on what it turned out to be.

Moved
Moved from Brachiacantha.

probably B. dentipes, but could be B. tau
A look at the underside of a male beetle would be the easiest way to tell which this is, and yours is a female. From above, it looks most like Brachiacantha dentipes. (Thanks for rotating the photo, by the way!) B. tau can be quite similar, though, and the range map where I got the information for B. dentipes shows it very close to western Colorado too. So I wouldn't rule B. tau out here. The "typical" patterns for the two species are dramatically different, but variations do occur that can make them very similar.

When I describe a creature's range on the Info page, "X to Y" means "from X, through everything between it and Y, and also Y." So "Nebraska to New Mexico" includes eastern Colorado. And since ranges can fluctuate, I wouldn't be surprised if an eastern Colorado species turned up in the west of the state.

Moved
Moved from ID Request.

definitely Brachiacantha
The diagnostic tibial spur on the foreleg is hard to see here because of the angle, but when I zoomed in I could see part of it. So you've got the genus right.

Do you mind if I rotate the image so the beetle's head is at the top? It's easier to ID insects from photos when they're facing either right or upwards, even if that's not the real-life angle.

That would be my guess too,hopefully V or
someone will check in.

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