Admirable False Brook Salamander vs

Aquiloeurycea praecellens compared with Chrysosphaerella annulata

Key Differences

• Admirable False Brook Salamander is Critically Endangered while is Not Evaluated.

Taxonomic Classification

Rank	Admirable False Brook Salamander
Kingdom	Animalia (animal)	Chromista (Chromista)
Phylum	Chordata (Chordates)	Ochrophyta (Ochrophyta)
Class	Amphibia (amphibien)	Chrysophyceae (Chrysophyceae)
Order	Caudata (Caudata)	Ochromonadales (Ochromonadales)
Family	Plethodontidae	Paraphysomonadaceae
Genus	Aquiloeurycea	Chrysosphaerella
Species	Aquiloeurycea praecellens	Chrysosphaerella annulata

Conservation Status

Admirable False Brook Salamander

CR — Critically Endangered

NE — Not Evaluated

Physical Characteristics

Attribute	Admirable False Brook Salamander
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Admirable False Brook 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.

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway and Sweden.

Admirable False Brook Salamander

The Admirable False Brook Salamander (Aquiloeurycea praecellens) is a species in the genus Aquiloeurycea. 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.

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.