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Longhorn beetle (Plinthocoelium suaveolens)

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A short video of a pair of Plinthocoelium suaveolens, a bright metallic green longhorn beetle that starts emerging around late May / early June, that I found on a gum bumelia (Sideroxylon lanuginosum) tree in my backyard.  The male is the one with extremely long antennae.  As you can hear in the video, this species, like many longhorns, has the ability to make a "squeak" through stridulation.  Gum bumelia seems to be the only host plant of Plinthocoelium in my area (the larvae live in the roots), though I've read that they are also sometimes attracted to Tupelo and Mulberry.


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