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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Polyphaga » Series Cucujiformia » Longhorn and Leaf Beetles (Chrysomeloidea) » Longhorn Beetles (Cerambycidae) » Flat-faced Longhorn Beetles (Lamiinae) » Tetraopini » Milkweed Longhorn Beetles (Tetraopes) » Red Milkweed Beetle (Tetraopes tetrophthalmus)
Photo#125909
Red Milkweed Beetle - Tetraopes tetrophthalmus
Copyright © 2007 Tony H

Red Milkweed Beetle - Tetraopes tetrophthalmus
Ottawa, Ontario, Canada
July 5, 2007
Size: approx. 1.2 cm
I love finding these guys. They entertain me with their squeaking noises when they are disturbed. They make the squeaking noise by rubbing the back portion of their head with their prothorax (ie. cranio-prothoracic stridulation haha). Catch one and watch closely!
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Contributed by Tony H on 9 July, 2007 - 10:57pm
Last updated 3 January, 2010 - 3:48pm

a mouthful!
"Cranio-prothoracic stridulation"? Wow. I think I like "squeaking" better! hee hee!

But really... I have lots of these fellows in my milkweeds, and I never knew they "stridulated" ( :D ) . I think I have to go catch one and see for myself.

Fun, and fascinating! Thanks!
… karenp, 13 August, 2007 - 2:00pm login or register to post comments

Moved
Moved from Red Milkweed Beetle.
… Mike Quinn, 10 July, 2007 - 10:26am login or register to post comments

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