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A Different Bordered Plant Bug? 2a - Stenomacra marginella

A Different Bordered Plant Bug? 2a - Stenomacra marginella
Prescott, Yavapai County, Arizona, USA
May 29, 2008
I went back to where I had recorded this submission and photographed these adult bugs massing under cottonwood trees in a broad floodplain. I haven't been able to find a match. See also .

pls note name change: S. marginella [=cliens]

Moved from Stenomacra.


Moved from True Bugs.

Moving to Largidae
Here is this species on BugGuide:

Here is the page with the Maryland Department of Agriculture identification story.

Here is the Smithsonian plate. See #22; legs don't appear red as with other specimens in this collection.

Here is a Swedish Museum of Natural History specimen: even though the specimen is labled Theraneis the url is Stenomacra cliens.

ITIS has Stenomacra as an accepted taxa with two accepted species (there may be more, just not listed) and places it in largidae (larginae).

I'm amazed that there is so little concordant information on this species that seemed so abundant to me. I'll move to largidae but someone might consider a Stenomacra cliens species page.

Cotton stainers?
I wonder if these might be cotton stainers (famil Pyrrhocoridae). I also wonder if the adults in your images have recently molted. There are several instances documented right here in Bugguide of synchronous molting in species which clump together like this. Can you go back in a day or two and take more shots? I'm thinking the next time the adults will be at least a slightly different color....

Yes, I Was Thinking of Red Bugs Too
I may be able to go back tomorrow which would be one week after these latest images were taken. I have images from that day of even paler individuals -- I referred to them as "albinos" in my head -- so maybe their pigmentation wasn't complete at that time. Thanks for the tip.

Return Trip
I was able to return to the bugs but they looked the same they did a week ago. I can post images if that would help. I even have images of molting in progress. (Check-out the Western Screech-Owl from nearby over at Mike's site.)

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