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Photo#868907
California Angle-wing Katydid - Microcentrum californicum - male

California Angle-wing Katydid - Microcentrum californicum - Male
Florida Station, Santa Rita Experimental Range, Pima County, Arizona, USA
July 28, 2013
Size: ~4cm
Found on wall on building; thinking Greater Angle-wing Katydid (Microcentrum rhombifolium), but I'm not sure if there are other candidates in AZ

Images of this individual: tag all
California Angle-wing Katydid - Microcentrum californicum - male California Angle-wing Katydid - Microcentrum californicum - male California Angle-wing Katydid - Microcentrum californicum - male California Angle-wing Katydid - Microcentrum californicum - male

for a few reasons
I'm pretty sure this is M. californicum. The most obvious trait (but it only works in males) is the darkened stridulatory area. In M. rhombifolium, as far as I've seen, this is always the same color as the rest of the insect. Females are tougher, but they tend to have slightly different venation in the tegmina, and a slightly different "look". the pronotum is slightly different in shape at the front edge (at least usually), but this is usually hard to see in profile shots. I have to admit that this one is a bit puzzling, because it appears to be female, but has the dark coloring at the base of the tegmina.

Microcentrum are difficult, and I will be the first to admit that I could be wrong on this one.

Moved from Angle-wing Katydids.

 
Thanks!
Thanks for the correction! I was under the impression that M. californicum was smaller, but I guess sizes are similar? I have a non-profile up on flickr: http://www.flickr.com/photos/44150996@N06/9571853683/sizes/l/, if it helps clarify things, I can post it here as well. I took a fair number of shots so if there's a particular angle or feature that would help for ID let me know and I can go through my photos.

 
Goof
I think I may have goofed on sex, I went through my pics and I've found one that seems to make it look male. I posted it along with a dorsal shot.

 
yup
definitely male

I've also wondered just how distinct M. californicum and [i]M. retinerve are. At least they are different places (but what happens in Mexico?).

 
Songs
Maybe their songs are distinct? That could maintain separation. I wonder if they get moved around on nursery stock too?

Moved
Moved from ID Request.

 
If it helps...

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