Utah-bean weevil - Bruchidius terrenus

ID confirmed by Rick Hoebeke:

"I concur that the images taken by Kerry Matz look like that of Bruchidius terrenus. It is definitely not Mimosestes acaciestes! Although I am unable to see all the details that would definitively identify it as B. terrenus, those that are visible, including the coloration pattern, are consistent with B. terrenus. I would love to see some specimens. The fact that Mimosa julibrissin is present in Salt Lake City makes me even more suspect. Chances are the winter conditions may not be suitable for this Asian immigrant to sustain any thriving populations on mimosa; then again who knows! Definitely an examination of old or even shed seed pods should provide evidence of seed predation by this mimosa specialist."

Moved from Mimosestes acaciestes.

… v belov, 28 October, 2013 - 8:44am

Moved tentatively; i think i figured it out finally...

if so, might be a state record; i'll ask around

Moved from Acanthoscelidina.

… v belov, 25 October, 2013 - 10:31am

Moved

Moved from Pea and Bean Weevils.

… v belov, 14 September, 2013 - 4:26am

any mimosa/silk trees (Albizia julibrissin) around?

i'm now suspecting Bruchidius terrenus, a recent invader --see(1) (i wouldn't be surprised for it to show up in your area)

… v belov, 28 January, 2012 - 12:19pm

Within eye sight,

what appears to be a mimosa is present (been around for many years). Should be able to confirm when things green up. Collected a number of pods to examine and will set some aside to see if anything pops out.

… Kerry S. Matz, 28 January, 2012 - 4:23pm

wonderful --thanks, Kerry!

looking forward to the results

… v belov, 28 January, 2012 - 4:25pm

Update

Albizia julibrissin is the tree in question. Have not noticed any exit holes in the pods or have found any beetles in the litter/soil under the tree. Winters might be to cold here.

… Kerry S. Matz, 25 October, 2013 - 1:21pm

thanks; looks like the B. terrenus hypothesis is gaining support

i'll poll the expert community )))))

… v belov, 25 October, 2013 - 2:09pm

a nice series of what looks like an Acanthoscelides to me

adding a plain dorsal view & a pygidium closeup would help a lot

… v belov, 3 September, 2009 - 10:31am