Calosoma scrutator grub - Calosoma - BugGuide.Net

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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Adephaga » Ground Beetles (Carabidae) » Carabinae » Carabini » Caterpillar Hunter Beetles (Calosoma)

Photo#57542

Copyright © 2006 Steven Barney

Calosoma scrutator grub - Calosoma

Barney Farm, Hwy 103, 1 mi. NW Washington, St. Landry Parish, Louisiana, USA
April 22, 2006

These grubs were alive and kicking when I took these photos. They would run around on the white board for a while, then stay completely still. They started showing up at the same time we started seeing tons of caterpillars.

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Contributed by Steven Barney on 13 June, 2006 - 10:27pm
Last updated 22 May, 2011 - 5:11pm

Moved

Moved from Fiery Searcher. There are many species of Calosoma, and I don't think the larvae can be placed to species from photographs.

… Brad Barnd, 22 May, 2011 - 5:11pm

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Hi Brad, a few of these were

Hi Brad, a few of these were reared to adulthood or I wouldn't have speculated on species.

… Steven Barney, 24 May, 2011 - 12:54pm

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Caterpillar eaters

I know that C. scrutator and several other large carabids eat caterpillars, so I thought I'd try presenting one to Nemo, my captive Ca*rabus Ne*moralis (asterisks hide these words from site's search function.) He checked it out and turned away from it twice. "Well, maybe he's not hungry," I thought, but I had also thought of a way to find out if that were so. When I collected the caterpillar, I also collected an earthworm, which I then presented to Nemo. Within seconds he had bitten the worm. My findings are purely anecdotal of course. A test using 50 beetles and hundreds of caterpillar-eating opportunities might have some scientific validity.

… Jim McClarin, 14 June, 2006 - 4:11pm

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Date problem

Hi Steven - nice pictures! However, I notice several of your shots posted today have a date of December 31 1969 - that seems to be the default when the date is entered in a different format from that suggested on the form. Can you correct them?

How about posting some of those "tons of caterpillars", too - we need more caterpillars! :)

… Hannah Nendick-Mason, 14 June, 2006 - 7:35am

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Man oh man!

I haven't even seen the adult yet! I wonder if C. scrutator is prevalent where I live in New Hampshire.

… Jim McClarin, 14 June, 2006 - 6:42am

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