Broad-necked Root Borer (Prionus pocularis) - Prionus laticollis

Moved

Moved from Prionus pocularis.

… v belov, 12 October, 2013 - 11:13am

Moved

Moved from Broad-necked Root Borer.

… Richard Wolfert, 21 May, 2012 - 12:14pm

Moved

Moved from Prionus.

… Richard Wolfert, 21 May, 2012 - 12:08pm

Prionus sp.

I would lean more towards P. pocularis. In P. laticollis, it also has
12 antennal segments but the upper eye lobes are broadly separated
by more than the width of the scutellum. In yours, it is slightly
less than that width.(1), pg 13, key 18. Still need to
wait for the experts to chime in.

… Bruce Getty, 21 May, 2012 - 10:18am

Thanks from a beetle beginner

I looked closely at why I chose what I did, and at your suggestion. Now I can see why yours is probably correct. I had passed over P. pocularis but apparently only noticed the images with the larger and more coarse antennae. Can I presume that those are the male and that the female (what I think I photographed) has somewhat finer antenna?

Thanks for helping, Bruce.

… Richard Wolfert, 21 May, 2012 - 12:11pm

Prionis

There is no question that there is sexual dimorphism with these
guys,but I am not smart enough or experienced enough to help you
out there. Welcome to the Buguide Guide Network.

… Bruce Getty, 21 May, 2012 - 6:38pm

Not new to Bugguide

Apparently I gave the wrong impression. I have a fairly sizable presence on Bugguide, but it's mostly moths with a few other things scattered around. You can look up my photos if you wish. Beetles would cause me to keep looking for that 30 hour day or the 8 day week. There simply isn't sufficient time to make it a priority. But I will try to learn from every one I encounter…and photograph.

… Richard Wolfert, 21 May, 2012 - 9:21pm

Profiles

I should have looked at your profile, which I normally do. I have
a tendency to think BG is just a beetle site as that is all I
normally look at, keep forgetting about all the other critters and
orders.

… Bruce Getty, 22 May, 2012 - 11:31am

Prionus laticollis

Eyes are much too small for pocularis. This is definitely a male laticollis. The darker color and elytral texture also point to laticollis.

… Frank Guarnieri, 13 September, 2013 - 6:22pm