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Photo#456676
Predator and prey - Calosoma

Predator and prey - Calosoma
Dragoon Mountain foothills, Cochise County, Arizona, USA
September 19, 2010
Size: about 1"
Came across this little drama on my morning walk. Some sort of larval stage but it didn't quite look like an antlion. Didn't bother to kill the caterpillar, just began consuming it alive.

K.V. Makarov: "Callistenia vs Chrysostigma. Bousquet will tell"
Moved from Frass.

Frassed
Moved from Beetles.

This has sat unattended too for a while now, further ID unlikely. Image will remain here for 30 days.

 
Are we thinking it is an unidentifiable Staphylinid
or is it likely Carabidae such as
or ?

 
I would lean more towards Car
I would lean more towards Carabini myself yes, but I am not as familiar with the larva. The locality the image was taken in has several large dark Calosoma species.

If we are comfortable with the ID, we can move to the appropriate place in the Guide. It is a nice, clear image!

 
When I saw the picture I imme
When I saw the picture I immediately thought it looked just like the Calosoma larvae I see here in the Central Valley of California.

Moved
Moved from ID Request.

Rove beetle?
It looks like a rove beetle of some kind, family Staphylinidae. I'm unfortunately not very familiar with them at all so I couldn't guess more specifically.

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