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Photo#363897
ID for Red & Black Geocorid in CA? - Isthmocoris imperialis

ID for Red & Black Geocorid in CA? - Isthmocoris imperialis
Webb Canyon, ~2000 ft. elevation, Los Angeles County, California, USA
January 10, 2010
Size: ~4 mm
I rescued this fascinating-looking bug from the pool yesterday afternoon. I think it must belong in the Geocoridae, but it looks nothing like the other specimens I have found around my place. My guess would be that it is one of the Isthmocoris species -- though not particularly similar-looking to the I. piceus images on this site, I did see some similarities with this image of I. imperialis. On further researching the possible Isthmocoris species, I was very intrigued by the possibility of I. tristis, for which I could find no images to compare... Van Duzee's Catalogue of the Hemiptera references it as being found in CA, and McAtee's Key to the Nearctic Genera & Species of Geocorinae gives the following brief, but compelling description:

"Geocoris tristis is probably a synonym of one or the other of the above species. ... Judging from the known rage of piceus and imperialis, the latter is most likely prove a synonym of tristis. ... The name tristis would certainly be a misnomer for this most gaily colored of our species of Geocoris."

It is that last bit of text that perks my interest, as the red coloration of this specimen seems quite striking. Very eager to hear the opinions and input of others!

Surrounding habitat is chaparral and mixed oak woodland.

Images of this individual: tag all
ID for Red & Black Geocorid in CA? - Isthmocoris imperialis ID for Red & Black Geocorid in CA? - Isthmocoris imperialis ID for Red & Black Geocorid in CA? - Isthmocoris imperialis ID for Red & Black Geocorid in CA? - Isthmocoris imperialis

very prob.Isthmocoris imperialis (Distant) -- Merrill Sweet det.
Harsita mon ange--
you so win ======= me such l'oozer ====== i shood neverever

Moved from Geocoris uliginosus.

 
Consider it an early Valentine's Day present to me...
...and please know that you will never be a loser in my book. (*smile*)

I am terribly happy to be able to add images of this species to the guide though! Looking so forward to more encounters with this colorful geocorid in the future.

I've just added another series of images...
...showing a second (or possibly the same) specimen -- click here to view. Hopefully these will assist in confirming an ID!

bold move, but i'll check it with Merrill
Moved from True Bugs.

 
Thanks for having it checked it out
If it does indeed turn out to be uliginosus, I won't be too disappointed. It will still be a brand new discovery for me and the first submission from CA for this species on BugGuide...

 
What a cute little bug!
^

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