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Photo#449439
Catalina Stick Insect ) Pseudosermyle catalinae - Pseudosermyle catalinae - female

Catalina Stick Insect ) Pseudosermyle catalinae - Pseudosermyle catalinae - Female
Avalon, Catalina Island County, California, USA
August 12, 2010
We have two documented stick insects on the island. Western Short Horned (Parabascilus sp) and the endemic. If someone could double check that this is not the pserdosermyle straminae found in Southern California I'd greatly appreciate it. I cannot find any photos of the p. catalinae.

Images of this individual: tag all
Catalina Stick Insect ) Pseudosermyle catalinae - Pseudosermyle catalinae - female Catalina Stick Insect  (Pseudosermyle catalinae) - Pseudosermyle catalinae - female

I suspect,
that P. catalinae is the only species in the genus found on the island. I won't conjecture about whether it is truly a different species from P. straminea (though I have doubts), but your's appears to be correctly identified from what I can see in the picture. A clear view of the cerci would make it certain. Also, I don't think anyone has ever figured a male of P. catalinae. It would be fun to see one (including some close-ups of the tip of the abdomen).

Moved from Pseudosermyle.

 
Unfortunately,
I have moved on from my position on Catalina, so acquiring another photo of this insect has some challenges. However, Rentz and Weissmann described this species and give many morphological differences between the two species, but genetic profiling would be awesome to see how distantly P. catalinae diverged.

 
I've never studied these closely, but would like to some day
One interesting thing is that some of the mainland "P. straminea" insects seem to fit the description of P. catalinae quite nicely too (at least based on appearances in photos). Definitely a group that could use some more attention.

 
close up of cerci
I located some photos of the pinned specimen and posted close-ups of the cerci.

Moved
Moved from Walkingsticks.

Moved
Moved from ID Request.

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