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 Post subject: Amateur question
PostPosted: March 6th, 2012, 3:10 pm 
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Joined: August 23rd, 2011, 1:46 pm
Posts: 15
I know this is amateur. Is there any visual technique to help differ between Crotalus oreganus helleri and Crotalus oreganus oreganus? I just recently moved and where I'm located I can't seem to pin point whose range I fall into or if I fall in the inter graded area. All research I've tried doing doesn't seem to come up with a clear answer. So for the upcoming months if I run into an oreganus in my new neck of the woods, I would like to be able to know whether it's oreganus oreganus or oreganus helleri. Thanks for any help!


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 Post subject: Re: Amateur question
PostPosted: March 6th, 2012, 5:06 pm 
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Joined: June 7th, 2010, 6:11 am
Posts: 5165
Location: Los Angeles County
sub species can only be identified by location..

Fundad


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 Post subject: Re: Amateur question
PostPosted: March 6th, 2012, 8:23 pm 

Joined: June 12th, 2010, 8:38 am
Posts: 530
I'm glad Fundad said that. That's what I was thinking, but I didn't want to give wrong info. Comin' from him it's pretty much gospel. Check range maps for both Crotes. I haven't looked @ range maps for either in a while so now, I'm wondering if there's an area where their respective ranges overlap.

reako45


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 Post subject: Re: Amateur question
PostPosted: March 6th, 2012, 8:46 pm 
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Joined: June 7th, 2010, 11:37 am
Posts: 835
Location: Bakersfield CA
South of the 138 is helleri north of the 58 is oreganus.


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 Post subject: Re: Amateur question
PostPosted: March 6th, 2012, 9:38 pm 
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Joined: August 23rd, 2011, 1:46 pm
Posts: 15
I appreciate this. Thanks for the knowledge haha. I think I might fall in the overlap area.


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 Post subject: Re: Amateur question
PostPosted: March 6th, 2012, 9:41 pm 
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Joined: August 23rd, 2011, 1:46 pm
Posts: 15
Yeah I've looked at a couple different range maps. It just seems a bit hard to pin point where locations are on them. From what I can tell there's an overlap. But I'm no expert so I can definitely be wrong.

reako45 wrote:
I'm glad Fundad said that. That's what I was thinking, but I didn't want to give wrong info. Comin' from him it's pretty much gospel. Check range maps for both Crotes. I haven't looked @ range maps for either in a while so now, I'm wondering if there's an area where their respective ranges overlap.

reako45


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 Post subject: Re: Amateur question
PostPosted: March 7th, 2012, 6:26 am 

Joined: June 7th, 2010, 10:35 pm
Posts: 163
JxT wrote:
I appreciate this. Thanks for the knowledge haha. I think I might fall in the overlap area.

Where are you located? Snakes that are morphologically helleri extend as far north as the Lebec/Gorman/Frazier Park area in southern Kern Co., while snakes occurring north of there (at least those I've seen on the northern slopes of the Tehachapis) are oreganus phenotypes.

Cheers,

BH


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