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Home » Guide » Arthropods (Arthropoda) » Insects (Insecta) » Beetles (Coleoptera) » Water, Rove, Scarab, Longhorn, Leaf and Snout Beetles (Polyphaga) » Metallic Wood Boring Beetles (Buprestoidea) » Metallic Wood-boring Beetles (Buprestidae) » Buprestinae » Actenodes » Actenodes acornis
Photo#60025
Actenodes acornis (Say) - Actenodes acornis - female
Copyright © 2006 Joshua P. Basham

Actenodes acornis (Say) - Actenodes acornis - Female
McMinnville, Warren County, Tennessee, USA
Size: 13 mm
Collected on May 27, 2004 from a mature maple that had fell.
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Contributed by Joshua P. Basham on 26 June, 2006 - 10:01pm
Last updated 23 August, 2006 - 10:42pm

4 th segment?
We have one of these in Maryland that is a little darker than this specimen. They always seem to be on newly dead red maple. I thought it was A. acornis but maybe it is A. simi. What is differrent about the fourth antennal segment?
… Frank Guarnieri, 27 June, 2006 - 9:25am login or register to post comments

 
4th Segment
- Antennomere 4 markedly triangular, at widest part nearly twice as wide as 3rd segment.... A. acornis (Say)

- Antennomere 4 slightly triangular, little wider than 3rd segment... A. simi Fisher.

Rick told me he even has trouble telling the two apart. I have some of the darker ones also and he is taking a look at them for me now. Hopefully he will agree that they are A. simi.
… Joshua P. Basham, 27 June, 2006 - 12:35pm login or register to post comments

Actenodes acornis
Hosts are maple, oak, beech, hickory. They range in size from 9.5-15mm. Similar to Actenodes simi Fisher, Fisher's key says that the 4th antenna segment is the key character to distinguish the two species. A. acornis is more bronze-green and A. simi is bronzy-black.
… Joshua P. Basham, 26 June, 2006 - 10:07pm login or register to post comments

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