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Photo#249152
Bug House 13 - Cassida rubiginosa

Bug House 13 - Cassida rubiginosa
Toronto, North York, Ontario, Canada
Size: about 1/2"
I have 2 insect/bug guides, I saw and photographed this bug and, have never seen it again, It was on a scotch thistle near a compost pile in my back yard. the bird drop type appendage is controlled by two hydrolics at back which helps this bug move ..It is very slow moving

Moved
Moved from Tortoise Beetles.

chrysomelidae: cassidinae
its a larval tortoise beetle. the shield is made of fecal matter, sloughed insect parts, etc. attached to a forklike appendage to try and block predatory attacks. they incorporate secondary metabolites from their host plants in the shields as an added chemical defense.

Please see...
Tortoise Beetles (Cassidini)



http://bugguide.net/node/view/40795/bgimage

I don't think these can be identified to species level in the larval stage. THe "fecal shield' dosen't help this guy move but it does help him stay alive. It is camouflage :)

If both of these images are of the same individual the images can be linked.

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