Colonial tunicate vs Gray-shanked Douc Langur

Symplegma reptans compared with Pygathrix cinerea

Key Differences

• Colonial tunicate is Not Evaluated while Gray-shanked Douc Langur is Critically Endangered.

Taxonomic Classification

Rank	Colonial tunicate	Gray-shanked Douc Langur
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Ascidiacea (Ascidiacea)	Mammalia (Mammals)
Order	Stolidobranchia (Stolidobranchia)	Primates (Primates)
Family	Styelidae	Cercopithecidae (Old World Monkeys)
Genus	Symplegma	Pygathrix
Species	Symplegma reptans	Pygathrix cinerea

Evolutionary Relationship

Colonial tunicate and Gray-shanked Douc Langur share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Colonial tunicate

NE — Not Evaluated

Gray-shanked Douc Langur

CR — Critically Endangered

Physical Characteristics

Attribute	Colonial tunicate	Gray-shanked Douc Langur
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Colonial tunicate

Habitat

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

Range

Distributed across Mexico, Norway, Sweden, and United States.

Gray-shanked Douc Langur

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Colonial tunicate

<em>Symplegma reptans</em> is a colonial tunicate in the family Styelidae with known occurrences in Mexico, Norway, Sweden, and the United States. This species has not been evaluated by the IUCN. Colonial tunicates in the genus <em>Symplegma</em> form encrusting sheet-like colonies on hard marine substrates, including rocks, shells, and artificial structures, in shallow coastal environments. Each colony is composed of multiple filter-feeding zooids embedded in a common tunic, through which nutrients and metabolites are distributed. The presence of <em>Symplegma reptans</em> across both the North Atlantic and Pacific coastal regions suggests either a wide native distribution or a history of introduction through maritime vectors such as ballast water and hull fouling. As a sessile filter feeder, this species contributes to water column filtration and nutrient cycling within benthic communities. The reproductive biology of <em>Symplegma reptans</em> likely involves both sexual reproduction via larval dispersal and asexual proliferation through budding within established colonies. Biological traits of this species remain poorly documented in the scientific literature.