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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Polyphaga » Series Cucujiformia » Longhorn and Leaf Beetles (Chrysomeloidea) » Leaf Beetles (Chrysomelidae) » Tortoise Beetles and the Hispines (Cassidinae) » Tortoise Beetles (Cassidini) » Cassida » subgenus Cassida (Cassida subgenus Cassida) » Thistle Tortoise Beetle (Cassida rubiginosa)
Photo#249152
Bug House 13 - Cassida rubiginosa
Copyright © 2009 William Cook

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
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Contributed by William Cook on 16 January, 2009 - 8:58am
Last updated 9 July, 2016 - 3:02pm

Moved
Moved from Tortoise Beetles.
… margarethe brummermann, 21 January, 2009 - 12:05am login or register to post comments

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.
… Drew, 16 January, 2009 - 10:08am login or register to post comments

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.

Welcome to BugGuide!
… Ron M., 16 January, 2009 - 9:16am login or register to post comments

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