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Resh Cicada (Megatibicen resh)
Photo#142808
Copyright © 2007
Bobby Grizzard
Tibicen -
Megatibicen resh
-
Austin, Travis County, Texas, USA
September 3, 2007
Size: 3.2cm, 5.1cm with wings
T. canicularis
or
T. linnei
or
T. pruinosa
? Or perhaps another one altogether?
Also, I've included images of the sex organs in the hopes that someone knows how to tell the sex of this cicada.
Images of this individual:
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Contributed by
Bobby Grizzard
on 3 September, 2007 - 11:06pm
Last updated 7 September, 2007 - 10:36am
Tibicen
You need measurements to tell the species. The male genitalia just tell you it is one of the largest species, such as T. auletes, and not any of the smaller species you list. (Turning it over so you could see the opercula - flaps covering the ear drums - would also help in recognizing the species).
…
Andy Hamilton
, 5 September, 2007 - 1:13pm
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Tibicen resh
Your measurements and the width of your finger (about 17 mm, the width of the cicada's head), plus the hump-backed thorax with whitish margins, and the rather short wings, combine to give the species identity. This is a greener specimen than the other photograph already posted for this species; but cicadas are sometimes variable in color.
…
Andy Hamilton
, 7 September, 2007 - 8:08am
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Size
I have added another image taken of this specimen, in which he is conveniently positioned along my finger for size reference. I have measured my finger and computed his size, which I think is accurate to within a couple millimeters. As for the opercula, I'm not quite sure what I'm looking for. I took a few shots of the underside of his "face," however my camera flash was not my friend that night. I'll add the best shot, in case that helps.
…
Bobby Grizzard
, 7 September, 2007 - 12:28am
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It appears to be a male, sinc
It appears to be a male, since an ovipositor is absent.
…
atrox
, 4 September, 2007 - 9:04am
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