Blackhead worm vs Cottontop Tamarin

Aporrectodea longa compared with Saguinus oedipus

Key Differences

• Blackhead worm is Not Evaluated while Cottontop Tamarin is Critically Endangered.

Taxonomic Classification

Rank	Blackhead worm	Cottontop Tamarin
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Annelida (Segmented Worms)	Chordata (Chordates)
Class	Clitellata (Clitellata)	Mammalia (Mammals)
Order	Crassiclitellata (Crassiclitellata)	Primates (Primates)
Family	Lumbricidae	Callitrichidae
Genus	Aporrectodea	Saguinus
Species	Aporrectodea longa	Saguinus oedipus

Evolutionary Relationship

Blackhead worm and Cottontop Tamarin share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Blackhead worm

NE — Not Evaluated

Cottontop Tamarin

CR — Critically Endangered

Physical Characteristics

Attribute	Blackhead worm	Cottontop Tamarin
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.

Cottontop Tamarin

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 5 distinct biome types spanning the Neotropic and Oceanian realms. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Colombia. 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.