Broad-barred Knot-horn vs

Acrobasis consociella compared with Chrysosphaerella longispina

Key Differences

Broad-barred Knot-horn is Least Concern while is Not Evaluated.

Taxonomic Classification

Rank	Broad-barred Knot-horn
Kingdom	Animalia (สัตว์)	Chromista (โครมิสตา)
Phylum	Arthropoda (สัตว์ขาปล้อง)	Ochrophyta (Ochrophyta)
Class	Insecta (แมลง)	Chrysophyceae (สาหร่ายสีทอง)
Order	Lepidoptera (ผีเสื้อ)	Ochromonadales (Ochromonadales)
Family	Pyralidae	Paraphysomonadaceae
Genus	Acrobasis	Chrysosphaerella
Species	Acrobasis consociella	Chrysosphaerella longispina

Conservation Status

Broad-barred Knot-horn

LC — Least Concern

NE — Not Evaluated

Physical Characteristics

Attribute	Broad-barred Knot-horn
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Broad-barred Knot-horn

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, and Sweden.

Broad-barred Knot-horn

The Broad-barred Knot-horn (Acrobasis consociella) is a species in the genus Acrobasis. It is currently classified as Least Concern on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.

Chrysosphaerella longispina is a colonial chrysophyte alga in the genus Chrysosphaerella, notable for the long silica spines (longispina: Latin, long spine) that project from each cell in the colony. The genus is characterized by spherical or discoid colonies of photosynthetic cells that each secrete siliceous scales and elongated spine-like appendages, making Chrysosphaerella colonies distinctively bristled and visible under light microscopy. The long spines of C. longispina likely serve as anti-predation structures that make the colonies more difficult for zooplankton to ingest. C. longispina is found in cold, oligotrophic freshwater lakes, particularly in Scandinavia, where comprehensive chrysophyte surveys have documented its presence. Chrysosphaerella colonies contribute to freshwater primary production and the cycling of biogenic silica, which upon cell dissolution is deposited in lake sediments as microscopically identifiable remains. These silica structures are widely used by paleolimnologists to reconstruct past changes in lake water chemistry, thermal stratification, and climate. The conservation status of C. longispina has not been assessed by the IUCN; the species is listed as Not Evaluated.