Reptile & Amphibian Forums

Fall is a good time to update the image catalogue and to track pattern changes. Here are a few fresh ones:

Enjoy!

Bob
SierraHerps.com

Gorgeous!! You know I love those white leonis!
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Aubrey Ross

©
www.SlipstreamSerpents.com

Really nice Bob. I particularly like the fourth one down. Absolutely classic looking thayeri.
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Darwin Rocks!

I really dig the last one. It's the first I've seen with a pinkish hue like that to it. Really great looking snakes!
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Tom

"The more people I meet, the more I like my snakes"

You don't see snakes like that walking down the street every day.
Jeff

>>Fall is a good time to update the image catalogue and to track pattern changes. Here are a few fresh ones:

Bob,
Great Pics of some great looking Thayeri.
I think I like the reduced black one the most.

How much pattern change do you actually see other than the grey/black speckling and fading colors (IE: orange to buckskin or tan coloration)?
And....Do you see more pattern change in females than males?
I know Ruthveni females go through more of an ontogenetic change than males.....Also....Male MexMex seem to have a cleaner, brighter pattern than females....Have you seen any of this in thayeri?
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John Lassiter

"Poor planning and procrastination on your part does not constitute an emergency on my part....."

John:

Thanks. As to your question about pattern change in leonis (thayeri) beyond what you described, I don't think so. And although there seems to be sexual dichromatism in mexicana and ruthveni, I can't say as I've seen it with leonis or alterna (other than extreme speckling seems to be linked to females in alterna).

Cheers,

Bob
SierraHerps.com

>>John:
>>
>>Thanks. As to your question about pattern change in leonis (thayeri) beyond what you described, I don't think so. And although there seems to be sexual dichromatism in mexicana and ruthveni, I can't say as I've seen it with leonis or alterna (other than extreme speckling seems to be linked to females in alterna).

That is exactly what I was looking for....I always saw that all mexicana female (ruthveni included) have had more 'speckling' than the males........i think that is dichromatism in itself.......
Most male mex mex, thayeri and ruthveni seem to "look" better as adults....cleaner and less speckled....
Just my observation.....but it doesn't mean much

thanks for the response Bob......
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John Lassiter

"Poor planning and procrastination on your part does not constitute an emergency on my part....."

>>I can't say as I've seen it with leonis or alterna (other than extreme speckling seems to be linked to females in alterna).

Also....I did not know that the 'speckeled' alterna were nearly all females.....
I've seen many Black Gap and River Road Speckled Alterna and I never really took in account if they were male or female....Interesting though....
Thanks again....
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John Lassiter

"Poor planning and procrastination on your part does not constitute an emergency on my part....."

John:

Speckling occurs in both sexes in alterna, but among the ones I've seen, the most fully speckled animals have been females. I am referring mainly to Black Gaps. I imagine this could be answered definitely on the alterna forum. Same may be true of the granite mexicana (and I'm not referring to the moderately speckled snakes, but the extremely speckled animals produced by the Bells...aka "granite" phase), in which the most fully speckled snakes are females.

Cheers,

Bob
SierraHerps.com

Thanks Bob......It's good to be back.

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John Lassiter

"Poor planning and procrastination on your part does not constitute an emergency on my part....."

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Thanks for the nice comments. More pics to follow.

Cheers,

Bob
SierraHerps.com

Bob,

Sincere thanks for the photos as they are absolutely exquisite! Especially #1 and #2...

Later,
Jim.
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CSRAJim