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ID's on Plethodons in OR

This is a discussion on ID's on Plethodons in OR within the Plethodontids and Lungless Salamanders (Bolitoglossa, Eurycea, Plethodon, etc.) forums, part of the Species, Genus & Family Discussions category; Hello, Recently I identified some of the newts I found as plethodon vehiculums and ensatinas. However, I found more the ...

Plethodontids and Lungless Salamanders (Bolitoglossa, Eurycea, Plethodon, etc.) The largest, and one of the most diverse groups of salamanders, these salamanders have all evolved to breathe solely through their skin and are found almost exclusively in North America.

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Old 20th April 2012   #1 (permalink)
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Default ID's on Plethodons in OR

Hello,

Recently I identified some of the newts I found as plethodon vehiculums and ensatinas. However, I found more the other night that ranged widely in colors, and I am wondering if I have found other species of plethodon? Perhaps Dunni mixed in? I'm posting pictures of all the colors I have. The ones that seem browner and have no stripe are the largest at 5 inches.

They were all found within 10,000 square feet of each other, inhabiting the same walls as ensatina and each other with a multitude of slugs, snails, millipedes, centipedes, spiders, worms, beetles, and small unidentifiable flying bugs. All living in between rock and on moss, only coming out when it is extremely damp. All the ones I have found were found right in the ground, under no cover whatsoever.

I want to know what species are on campus so that I can do a concentration on diversity in a small area. It'd be nice to know if this is simply color diversity, or if I found two species of Plethodon.
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ID's on Plethodons in OR-img_0981.jpg   ID's on Plethodons in OR-img_0991.jpg   ID's on Plethodons in OR-img_0990.jpg  



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Old 20th April 2012   #2 (permalink)
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Default Re: ID's on Plethodons in OR

They all look like western redbacks, although in my experience Dunn's are WAY more abundant in the region. The fourth picture makes me wonder about Batrachoseps...but I really doubt it. I've found very few Ensatina in the area - one in Troutdale, several in Vancouver; one Aneides in Forest Park; lots of Dunn's and giants everywhere; torrents at Wahkeena; newts and apparently browns at Forest Grove; and long toes in Vancouver and near the Multnomah fair grounds. Redbacks - only a few here and there, including a couple in Forest Park.



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Old 20th April 2012   #3 (permalink)
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Default Re: ID's on Plethodons in OR

Is the first one possibly melanistic? The color variation seems huge for finding them in a very small area.



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Old 20th April 2012   #4 (permalink)
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Default Re: ID's on Plethodons in OR

Could be. It's rather common in Plethodon. I've encountered both red and yellow P.idahoensis and red and yellow P.vehiculum. Don't recall any melanistic specimens, but I know that melanism ["leadback"]] is well-known and widespread in many species.



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Old 20th November 2012   #5 (permalink)
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Default Re: ID's on Plethodons in OR

I'd say that they are Dunn's Salamanders and possibly some Del Norte Salamanders. depending on where in the state you located them.



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Old 21st November 2012   #6 (permalink)
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Default Re: ID's on Plethodons in OR

Northern end of the state, so no Del Nortes.



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Old 21st November 2012   #7 (permalink)
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They're definitely redbacks. This was a bit ago, they're all over this area.



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