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Photo#36279
Magicicada septendecula - male

Magicicada septendecula - Male
Bloomington, Monroe County, Indiana, USA
May 28, 2004
The least common of the 3 17-year cicadas. Distinguished from septendecim by having a short, more rapidly-tapering abdomen like cassini, and from cassini by having orange banding on the underside of the abdomen. Also easily recognizable by call.

So
Who's correct? How can this cicada be confidently placed here?

For the same reasons...
As my comments here . This specimen seems to be M. septendecim. Also I think the reason for the rapidly tapering abdomen may be due to the lack of the posterior portion and is missing due to the Massospora cicadina fungal infection which is rampant in periodical cicadas. See that little yellow nodule at the very end of the abdomen? That looks like fungal spores to me.

 
In the field, the way I IDed
In the field, the way I IDed this guy is by hearing a septendecula call and following it to this guy, so I'm pretty certain of the ID. In addition to abdomen proportion differences, septendecim just aren't this dark. Septendecim will have very wide bright orange stripes on the underside of the abdomen, not narrow darker orange on a mostly-black abdomen. See: UMMZ: Magicicada, or compare this male with a typical septendecim here.

Patrick Alexander
http://boechera.nmsu.edu/~paalexan/

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