Blackhead worm vs Blunt-headed Salamander

Aporrectodea longa compared with Ambystoma amblycephalum

Key Differences

• Blackhead worm is Not Evaluated while Blunt-headed Salamander is Critically Endangered.

Taxonomic Classification

Rank	Blackhead worm	Blunt-headed Salamander
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Annelida (Segmented Worms)	Chordata (Chordates)
Class	Clitellata (Clitellata)	Amphibia (Amphibians)
Order	Crassiclitellata (Crassiclitellata)	Caudata (Caudata)
Family	Lumbricidae	Ambystomatidae
Genus	Aporrectodea	Ambystoma
Species	Aporrectodea longa	Ambystoma amblycephalum

Evolutionary Relationship

Blackhead worm and Blunt-headed Salamander share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Blackhead worm

NE — Not Evaluated

Blunt-headed Salamander

CR — Critically Endangered

Physical Characteristics

Attribute	Blackhead worm	Blunt-headed Salamander
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Blackhead worm

Habitat

Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Belgium, Denmark, Norway, Sweden, and United States.

Blunt-headed Salamander

Habitat

Found across multiple habitat types including tropical and subtropical coniferous forests, tropical and subtropical grasslands and savannas, and Mediterranean forests and woodlands, among 6 distinct biome types spanning the Nearctic and Neotropic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Mexico. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Blackhead worm

The Blackhead worm (Aporrectodea longa) is a species in the genus Aporrectodea. Native to Europe and North America, inhabiting ecosystems characteristic of the region. Distributed across Belgium, Denmark, Norway, Sweden, and United States.

Blunt-headed Salamander

The Blunt-headed Salamander (Ambystoma amblycephalum) is a species in the genus Ambystoma. It is currently classified as Critically Endangered on the IUCN Red List. Found across multiple habitat types including tropical and subtropical coniferous forests, tropical and subtropical grasslands and savannas, and Mediterranean forests and woodlands, among 6 distinct biome types spanning the Nearctic and Neo