Bornean Smooth-Tailed Treeshrew vs

Dendrogale melanura compared with Chrysosphaerella annulata

Key Differences

Bornean Smooth-Tailed Treeshrew is Data Deficient while is Not Evaluated.

Taxonomic Classification

Rank	Bornean Smooth-Tailed Treeshrew
Kingdom	Animalia (Animals)	Chromista (Chromista)
Phylum	Chordata (cordados)	Ochrophyta (Ochrophyta)
Class	Mammalia (mamíferos)	Chrysophyceae (Chrysophyceae)
Order	Scandentia (Scandentia)	Ochromonadales (Ochromonadales)
Family	Tupaiidae	Paraphysomonadaceae
Genus	Dendrogale	Chrysosphaerella
Species	Dendrogale melanura	Chrysosphaerella annulata

Conservation Status

Bornean Smooth-Tailed Treeshrew

DD — Data Deficient

NE — Not Evaluated

Physical Characteristics

Attribute	Bornean Smooth-Tailed Treeshrew
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bornean Smooth-Tailed Treeshrew

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway and Sweden.

Bornean Smooth-Tailed Treeshrew

The Bornean Smooth-tailed Treeshrew (Dendrogale melanura) is a species in the genus Dendrogale. It is currently classified as Data Deficient on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

Chrysosphaerella annulata is a colonial freshwater chrysophyte microalga in the genus Chrysosphaerella, class Chrysophyceae. Unlike unicellular loricate chrysophytes, Chrysosphaerella species form spherical or ellipsoidal free-floating colonies in which individual cells are embedded in a common gelatinous matrix. The individual cells bear long siliceous scales with distinctive ring-like or annular structures — referenced by the species epithet annulata — projecting outward from the colony surface, giving the colony a spiny appearance under microscopy. These siliceous scales are species-specific and their morphology, as revealed through electron microscopy, is the primary character for identifying Chrysosphaerella species. C. annulata has been recorded from Norwegian and Swedish freshwater environments, consistent with the Scandinavian emphasis in chrysophyte research and the high diversity of chrysophytes in boreal freshwater systems. Chrysosphaerella colonies are planktonic, inhabiting the limnetic zone of oligotrophic to mesotrophic lakes where they may form locally conspicuous populations during favorable conditions. The species uses chlorophylls a and c with fucoxanthin for photosynthesis, contributing to primary production. Chrysosphaerella scales can accumulate in lake sediments, providing a record of past community composition and environmental conditions. C. annulata has not been assessed under IUCN criteria and is classified as Not Evaluated. Its documentation contributes to understanding the diversity of colonial chrysophyte forms in northern European freshwater ecosystems.