vs Flat-headed Kusimanse

Chrysosphaerella triangulata compared with Crossarchus platycephalus

Key Differences

• is Not Evaluated while Flat-headed Kusimanse is Least Concern.

Taxonomic Classification

Rank		Flat-headed Kusimanse
Kingdom	Chromista (โครมิสตา)	Animalia (สัตว์)
Phylum	Ochrophyta (Ochrophyta)	Chordata (สัตว์มีแกนสันหลัง)
Class	Chrysophyceae (สาหร่ายสีทอง)	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)
Order	Ochromonadales (Ochromonadales)	Carnivora (สัตว์กินเนื้อ)
Family	Paraphysomonadaceae	Herpestidae
Genus	Chrysosphaerella	Crossarchus
Species	Chrysosphaerella triangulata	Crossarchus platycephalus

Conservation Status

NE — Not Evaluated

Flat-headed Kusimanse

LC — Least Concern

Physical Characteristics

Attribute		Flat-headed Kusimanse
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway and Sweden.

Flat-headed Kusimanse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Chrysosphaerella triangulata is a colonial freshwater chrysophyte microalga in the genus Chrysosphaerella, class Chrysophyceae, order Chromulinales. Chrysosphaerella species form spherical free-floating colonies of golden-brown cells embedded in a gelatinous matrix, with individual cells bearing elongated siliceous scales that project outward from the colony surface. The species epithet triangulata — triangular — refers to the triangular cross-section or profile of the siliceous scales on the cell surface, which distinguishes this species from C. annulata, which has annular ring structures on its scales, and from other congeners with different scale geometries. Siliceous scale morphology examined under scanning electron microscopy is the primary diagnostic character for Chrysosphaerella species identification. C. triangulata has been recorded from Norwegian and Swedish freshwater habitats, part of the documented chrysophyte flora of boreal and subarctic Scandinavian lakes. These environments are characterized by cold, clear, nutrient-poor water and seasonal ice cover, creating conditions favorable for chrysophyte diversity including colonial forms like Chrysosphaerella. The colonies inhabit the photic zone of the water column, photosynthesizing with chlorophylls a and c and carotenoid accessory pigments. Chrysosphaerella scales deposited in lake sediments serve as paleolimnological indicators. C. triangulata has not been formally evaluated under IUCN criteria and is listed as Not Evaluated. It contributes to documentation of the rich chrysophyte diversity in Scandinavian freshwater systems.