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Cicada - Megatibicen cultriformis

Cicada - Megatibicen cultriformis
Empire Gulch, Pima County, Arizona, USA
August 24, 2012

Western Flood Plain Cicada
This is the largest cicada species in the southwest!
It appears to be closely related to T. pronotalis and T. dealbatus.

Moved from ID Request.

They were eclosing
all around us during our black lighting session close to the creek

They are wonderful cicadas!
Compare this species with the following:
Tibicen dealbatus (Davis 1915), "Plains Cicada" (no accepted common name applies)
Tibicen pronotalis Davis 1938 - [syn. marginalis (Walker 1852)], "Walker's Cicada"

They are all very similar and appear closely related morphologically & ecologically.

Should you ever come across molts, recently dead or dying specimens, I'd greatly appreciate a couple of representatives.

Bill Reynolds
Curator, Coordinator, & Containment Director of the Arthropod Zoo
NC Museum of Natural Sciences
11 West Jones Street
Raleigh, NC 27601-1029
(919) 733-7450 Ext. 512

Please note, my phone number is soon to be (919) 707-9921

I didn't pick up
any this time, but I'm sure I have some pinned ones from Prescott that are some years old (I mention that because they are probably no good for genetics any more) - I could send you some of those. I also have wing bangers from last year, frozen. They didn't show this year. As for the more eastern Tibicen, I don't think we get them. Eric Eaton in Co might.

Thank you !
Sorry for the confusion ;)
I was simply noting that your T. cultriformis in Arizona is very similar to our ec. T. pronotalis and T. dealbatus of the Plains ;)

I also saw a number of cultriformis a few years back (Harshaw Creek), but did not collect any at the time. They were just too much fun to watch emerge and hear calling in the evening. They have a very "knocky drone", unlike the song of pronotalis/dealbatus.

Let me know if you or immediate colleagues are interested or have need for any of the eastern species for comparison. I am able and willing to provide a number of them for reference and/or exchange.


The drone reminds very much of rattler sounds
a herpetologist who joined me on my last rip jumped repeatedly when a teneral, still flightless cicada gave a short burst of drone from the ground next to his feet. They did that when we came close to stepping on them, usually an effective warning to predators, I guess.
I'll let Carl Olson know about your offer of eastern specimens. I myself do not collect or research in the field.

You mentioned older specimens, if you can spare a few of the cultriformis and crepitating specimens, I'd be grateful.

+ I can send a list of species we encounter and can provide upon request.


this one looks as if their ma
this one looks as if their may be hybridization, however without recorded calls from the T.dealbatus contact zones we can not even begin to make a hypothesis of blending or introgression

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