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Photo#129540
tiny, shiny beetle - Largus

tiny, shiny beetle - Largus
Salem, Marion County, Oregon, USA
July 21, 2007
Size: 5mm approx
Last evening, in our backyard, near a retaining wall, there was an irruption of these shiny little beetles. Superficially they look like black, small, Lady Beetles. With them were several even smaller beetles, about 1mm , red with a black head. They were on the wall, Petunias and Nasturniums.
There were none this AM

Images of this individual: tag all
tiny, shiny beetle - Largus tiny, shiny beetle - Largus

Moved
Moved from Largus.

Moved
Moved from True Bugs.

nymphs of Hemipteran (true bug)
Hi Michel, these are immature bugs, not beetles (although they do superficially look a lot like beetles). The other smaller 'beetles' are probably an earlier instar of the same species. They look like a Pentatomid or something closely related.

You can tell they're a bug by the general body shape, especially the head shape and placement of the 'beady' eyes on the side of the head, the mouthparts (you can see the tip of a beaklike mouth in a few of the pictures) and most easily the antennae, which have much fewer segments than a beetle (looks like 5 on your bug here) as opposed to usually 11 on a beetle.

 
nymphs of Hemipteran (true bug)
Wow! I am impressed. I kept pouring over every small beetle pic I could find; no wonder I got nowhere. There is a lot to learn.
Thanks a lot.
Michel Kleinbaum