Ambystoma opacum

Overview

North Carolina describes a dark, stocky adult marked by white or gray bands. Breeding males have brighter markings than females, although patterns vary between individuals. Damp woodland near pools provides shelter beneath logs and leaves. The adult’s appearance and terrestrial habits differ from those of its aquatic larvae.

Females lay eggs in depressions beside temporary ponds, sometimes in their dry beds. They remain curled around the clutch until rising autumn water covers it. Larvae then develop in water through winter, with transformation occurring from late spring into summer. This reproductive sequence depends on both terrestrial shelter and seasonal inundation.

North Carolina’s account describes nocturnal adults and variable individual banding. Recently transformed juveniles instead have pale speckles and striped toes. Adults eat living terrestrial invertebrates, while hatchlings begin with zooplankton and broaden their aquatic diet as they grow. Adult markings should not be imposed on every life stage.

Origins & earliest records

Government field accounts distinguish adult diagnosis from a life cycle spanning land and water.

Evidence & interpretation

Two state wildlife agencies supply complementary descriptions; local abundance statements should retain their geographic scope.

Selected bibliography

Documented works and useful reading. This is not a list of every appearance.

1. 01

   Marbled Salamander

   Missouri Department of Conservation

2. 02

   Marbled Salamander

   North Carolina Wildlife Resources Commission

Family, evolution & connections

Taxonomic classification

A hierarchy of classified groups, not a chain of direct ancestors.

Source note: Family placement follows Missouri’s field guide.

1. FamilyAmbystomatidae
2. GenusAmbystoma

References

Sources supporting this profile. Linked pages have their own scope and editorial standards.

1. Government field guideMarbled SalamanderResearch access: 2026-10-11
2. Government species accountMarbled SalamanderResearch access: 2026-10-11

Image credits

AI interpretation of a pale-banded adult marbled salamander.

AI interpretation; banding, pose and setting imagined.