Adult characteristics ²

The Idaho Giant Salamander is bulky, reaching a maximum length of 330mm (13in) at maturity. Distinguishing features include the tan or copper marbling pattern, smooth skin and large head. Adult females will protect their eggs and larvae until they leave the nest chamber. As of 2015, Dicamptodon aterrimus is Idaho's state amphibian.

Egg characteristics ²

Eggs are attached singly and side by side to the roof of the nest chamber.

Larvae characteristics ²

The larvae are stream dwelling with the larval period lasting from 18 to 24 months. Paedomorphic larvae may exceed 300mm (12in). Short, bushy external gills are present, along with a dorsal tail fin. If metamorphosis does not occur after 24 months, the larvae become paedomorphic (sexually mature).

Sources and Credits

1. (c) Patrick (Dan) Giltz, all rights reserved, uploaded by Patrick (Dan) Giltz
2. Adapted by Patrick (Dan) Giltz from a work by (c) Patrick (Dan) Giltz, some rights reserved (CC BY-SA)

More Info

• iNat taxon page
• AMNH Amphibian Species of the World
• AmphibiaWeb
• Animal Diversity Web
• Biodiversity Heritage Library
• BOLD Systems BIN search
• Global Biodiversity Information Facility (GBIF)
• HerpMapper
• NatureServe Explorer 2.0
• VertNet

Range Map

(c) Idaho Fish and Game, all rights reserved

iNat Map