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Photo#328844
Tibicen linnei Cicada Male-underside- - Neotibicen linnei - male

Tibicen linnei Cicada Male-underside- - Neotibicen linnei - Male
Peoria County, Illinois, USA

Images of this individual: tag all
Tibicen linnei Cicada Male-horizontal view- - Neotibicen linnei - male Tibicen linnei Cicada Male-facing- - Neotibicen linnei - male Tibicen linnei Cicada Male-overview- - Neotibicen linnei - male Tibicen linnei Cicada Male-underside- - Neotibicen linnei - male

Moved
Moved from Tibicen.

Tibicen linnei (MALE)
Most of the T. linnei characters are readily addressed by this specimen.

Costal margin (strongly bowed)
Node position
Eye color (dark)
Ventral abdominal stripe (well defined black Stripe)
Opercular shape (slightly elongated (not evenly rounded)

Keep in mind these characters are not absolute and populations across the midwest are subject to hybridization.

 
I think their is mass intogre
I think their is mass intogression of the pruinosus complex and T.linnei. wen i look at theese T.linnei i have found they key out to be pruinosa in almost every aspect exept they call like T.linnei. I think if we could find allopatric populations of linnei the bisection test would hold up like expected along with the operculae and ventrel stripe. now wen you find T.linnei sympatric with any pruinosus complex i think this bisection test falls apart alot due to intogression. the problem is that most T.linnei are sympatric with the pruinosus complex? i have found that regions having alot faster rapid calling linni examples seem to show more T.linnei traits. esp in the northern parts of illinois.i would love to find out why theese hybrids are only found in T.linnei habitates if they are infact hybridizing on such a large scale? Here in most parts of centrel IL T.linnei and its hybrid/backcoss are not sympatric with pruinosus in urban areas and this brings up a huge WHY? if theese are infact hybrids than why are they not sympatric with pure pruinosa in urban areas if they possess the same genetics? there is still no proof theese are hybrids but it looks that way and i will be looking into this for 3 months. i say lets find allopatric T.linnei and compaire them with sympatric populations? i am not shure were T.linnei is allopatric though?

 
possibly "swamping"
"Here in most parts of centrel IL T.linnei and its hybrid/backcoss are not sympatric with pruinosus in urban areas and this brings up a huge WHY?"

This may not be the answer to your question, but it may help explain. Sometimes, hybrid populations absorb the "pure parental stocks" + there is also the potential for some traits from one of the parent species to be more dominant or apparent.

Usually when introgression occurs, the pure forms in that vicinity are absorbed (lost). It may depend on which species was/is dominant in numbers and genetics.

We see the same with linnei x winnemana!

 
Identification
Thanks Bill!And, may I call you the Cicada Master?

 
thanks....
Cicada Master? - I'm flattered, but I make my share of mistakes...hence all my pencils still have erasers and my keyboards still have backspace buttons ;)

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