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Southwestern Center for Herpetological Research
sfezio Mar 12, 2006 03:33 PM

Can someone please give me their opinion on what kind of garter snake this is?
unknown garter

Replies (4)

JDT Mar 12, 2006 10:19 PM

I'm not 100% positive, but it looks like a dark phase plains garter (T.Radix). Having some locale info would be helpful.

sfezio Mar 13, 2006 09:22 AM

Based on pics from around the net that's what I came up with. However, I'm in Fort Worth, TX and I'm not sure if the plains is found here normally. I'm wondering if it was someone's pet...

JDT Mar 13, 2006 09:49 PM

Actually, plains garters do range into North Texas.

http://www.zo.utexas.edu/research/txherps/snakes/thamnophis.radix.html

rhallman Mar 14, 2006 10:57 AM

I believe it is probably a Texas Garter Snake, Thamnophis sirtalis annectens. It looks only a little atypical from the few I have seen but that could easily be due to normal variation. I do not have any field experience with these. I was unable to count scale rows from your photograph but the lateral stripes should involve scale row 4 as well as scale rows 2 and 3. I get the impression this is the case. T s annectens is indigenous to your immediate area. If I am not mistaken this is the only Garter Snake native to the Fort Worth area.
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Randy Hallman

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