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Photo#184011
Beetle with huge 3 last members of antennae - Trimitomerus riversii - male

Beetle with huge 3 last members of antennae - Trimitomerus riversii - Male
Picture Rocks, NW of Tucson, pima County, Arizona, USA
May 20, 2008
Size: 1 cm

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Beetle with huge 3 last members of antennae - Trimitomerus riversii - male Beetle with huge 3 last members of antennae - Trimitomerus riversii

Trimitomerus
T. riversii (Horn). Definitely a cool beast.

 
Superficial similarity to velvet ant males
I found it in the house under a light and nearly swept it out with our summer-nightly invasion of those wasps. Host species??

 
Thanks again
even the species!

Pythidae
This is a member of a small tenebrioid family, Pythidae. Much of the natural history, especially larvae are still unknown. I have seen this species on the NW side of Tucson, when I lived for nearly nine years. I have never seen this species anywhere else around town.

 
Thank you
that's very interesting. I think I'll send the specimen to the U o A collection if Carl Olson wants it.

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