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Photo#856426
Wedge-shaped Beetle - Macrosiagon cruenta

Wedge-shaped Beetle - Macrosiagon cruenta
Rancho Santa Fe, San Diego County, California, USA
March 21, 1973
Size: Body length 5mm
Possibly the same as this very similar specimen - Macrosaigon cruentum cruentum:

My thanks for confirmation or otherwise!

Images of this individual: tag all
Wedge-shaped Beetle - Macrosiagon cruenta Wedge-shaped Beetle - Macrosiagon cruenta

Definitely correct, Jim
Not only is this an excellent visual match for the thumbnail you referenced of M. cruentum (=M. cruenta), but—even though it looks different from many other M. cruenta posts (with its abundant red...head, thorax, and most the elytra)—it has the distinguising hind tarsomere lengths character for the species, which is apparent in your 2nd image.

I don't know what current opinions are on subspecies here, but M. c. cruentum seems iffy. Going through Rivnay(1) seems to lead to M. c. rufum, while in Linsley & MacSwain(2) I get M. c. flumineum. But the species is clear.

Moved from Wedge-shaped Beetles.

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