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Dicamptodon copei, n. sp., from the Pacific Northwest, U.S.A. (Amphibia: Caudata: Ambystomatidae)

Ronald A. Nussbaum
Copeia
Vol. 1970, No. 3 (Sep. 3, 1970), pp. 506-514
DOI: 10.2307/1442278
Stable URL: http://www.jstor.org/stable/1442278
Page Count: 9
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Dicamptodon copei, n. sp., from the Pacific Northwest, U.S.A. (Amphibia: Caudata: Ambystomatidae)
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Abstract

Dicamptodon copei n. sp., is described from western Washington State and northwestern Oregon. It is characterized by sexual maturity in the larval stage at small size, short limbs, small head, reduced tail fin, reduced number of maxillary + premaxillary teeth, reduced number of vomerine teeth, and reduced sensitivity to thyroid treatment; as compared to larvae of Dicamptodon ensatus. It is suggested that D. copei is a relatively recent derivative of a D. ensatus-like ancestor.

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