Allograpta obliqua

Revised ID: Allograpta exotica

White face with black stripe distinguishes this from the nearly identical A. obliqua.

… Ron Hemberger, 6 May, 2013 - 10:37pm

Well,

we don't really see the face below the antennae in this photo. You're looking at the frons.
Take a look at the arrows in Martin Hauser's photos. Also important is what the katepimeron looks like.
The frons of A. obliqua looks like this - do a horizontal scroll through the images:
A. obliqua

… Hartmut Wisch, 6 May, 2013 - 11:29pm

Would you say Allograpta sp. then?

As always, I appreciate your insights.

… Ron Hemberger, 6 May, 2013 - 11:44pm

This was a very long time ago -

and I don't think the photo really contributes much to what we now have on BG.
Also, I meant to say 'katepisternum', which is what Martin's table says; he compares the yellow katepisternum of obliqua with the black katepisternum of exotica.
As far as my and some other questionable images are concerned, I think I'll be cleaning house soon, that is delete them.
My concern, however, is that we should not assign ID based on the frons where actually the face is concerned. In the LifeDesks link I gave above, you can find a frontal view of the head of obliqua showing the yellow face but also the dark markings on the frons.

… Hartmut Wisch, 6 May, 2013 - 11:57pm

Thank you for your clarification.

Elsewhere, I've just made a few changes I should change again. The yellow face/black frons thing had become a problem for me a few minutes before your first comment on my ID revision here. I now see the error of my ways. Pecavi.

Oh, before I forget...again.
Have you noticed the blue/green lines on your specimen and others? At one point I was told these were light artifacts, possibly from flash. I now suspect they are associated strictly with A. exotica, but not always present there. Do you have any thoughts on this?

… Ron Hemberger, 7 May, 2013 - 12:26am