Bilou or Siamang Kerdil Mentawai vs Pixie Foam

Hylobates klossii compared with Stereocaulon pileatum

Key Differences

• Bilou or Siamang Kerdil Mentawai is Endangered while Pixie Foam is Critically Endangered.

Taxonomic Classification

Rank	Bilou or Siamang Kerdil Mentawai	Pixie Foam
Kingdom	Animalia (hewan)	Fungi (Fungi)
Phylum	Chordata (Chordates)	Ascomycota (Sac Fungi)
Class	Mammalia (mamalia)	Lecanoromycetes (Lecanoromycetes)
Order	Primates (Primata)	Lecanorales (Lecanorales)
Family	Hylobatidae	Stereocaulaceae
Genus	Hylobates	Stereocaulon
Species	Hylobates klossii	Stereocaulon pileatum

Conservation Status

Bilou or Siamang Kerdil Mentawai

EN — Endangered

Pixie Foam

CR — Critically Endangered

Physical Characteristics

Attribute	Bilou or Siamang Kerdil Mentawai	Pixie Foam
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bilou or Siamang Kerdil Mentawai

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Pixie Foam

Habitat

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

Range

Distributed across Denmark, Norway, Portugal, Sweden, and United States. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.