Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Long-jointed Beetle - Arthromacra aenea

Long-jointed Beetle - Arthromacra aenea
Hwy 55 and Sedwick, Durham County, North Carolina, USA
June 11, 2005
Size: 10 mm
Found at a lighted wall at night, captured and posed. Body length measured at 10 mm.

Brimley, Insects of North Carolina, p. 193, (1) lists only A. robinsoni for the Piedmont of North Carolina, whis is where Durham is. I can find no illustrations of that species, and few references to it. So this is possibly either A. aenea or A. robinsoni, based on published ranges.
Image updated 6/3/21.

(See comments below.)

Moved from Arthromacra. I guess the species ID was pretty certain. (And thanks for tip on spelling, Eric.)

Anthromacra aenea
This is Anthromacra aenea, a member of the family Tenebrionidae, subfamily Lagriinae (formerly placed at family level as Lagriidae).

Misspelled here. Genus is actually "Arthromacra."

Many thanks!
OK, I had the family wrong--no wonder I couldn't find it. I should have noticed those odd antennae--not Chrysomelid-like.

I've moved this to the genus level. I see listings for theree species in my area. (Unless you have more on identification handy?)

Thanks again.

Patrick Coin
Durham, North Carolina