Black Laceweaver vs

Amaurobius ferox compared with Colacium sideropus

Key Differences

Black Laceweaver is Least Concern while is Not Evaluated.

Taxonomic Classification

Rank	Black Laceweaver
Kingdom	Animalia (Animals)	Protozoa (protozoa)
Phylum	Arthropoda (Arthropods)	Euglenozoa (Euglenozoa)
Class	Arachnida (Arachnids)	Euglenoidea (Euglenoidea)
Order	Araneae (Araneae)	Euglenida (Euglenida)
Family	Amaurobiidae	Euglenaceae
Genus	Amaurobius	Colacium
Species	Amaurobius ferox	Colacium sideropus

Conservation Status

Black Laceweaver

LC — Least Concern

NE — Not Evaluated

Physical Characteristics

Attribute	Black Laceweaver
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black Laceweaver

Habitat

Typically found in terrestrial habitats from forests to deserts.

Range

Distributed across Belgium, Canada, Denmark, Sweden, and United States.

Habitat

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

Range

Distributed across Brazil and Sweden.

Black Laceweaver

The Black Laceweaver (Amaurobius ferox) is a species in the genus Amaurobius. It is currently classified as Least Concern on the IUCN Red List. Typically found in terrestrial habitats from forests to deserts.

Colacium sideropus is a microscopic euglenoid protist belonging to the family Euglenaceae, characterized by its sessile, colonial lifestyle attaching to aquatic invertebrates and zooplankton. Members of the genus Colacium are distinguished from free-swimming euglenoids by their stalked or clustered growth form, anchoring to the bodies of crustaceans such as copepods and cladocerans in freshwater environments. Like other photosynthetic euglenoids, Colacium possesses chloroplasts derived from secondary endosymbiosis with a green alga, allowing it to perform photosynthesis under favorable light conditions. The relationship with host invertebrates is generally considered epibiotic rather than parasitic, with the protist colonizing the external surfaces of its host without causing significant harm. Colacium sideropus occurs in freshwater lakes, ponds, and slow-moving streams where its zooplankton hosts are abundant. Its ecological role includes contributing to microbial food webs and nutrient cycling within freshwater ecosystems. As with many microscopic protists, its true distribution and abundance are difficult to assess from macroscopic surveys, and it is likely globally distributed wherever suitable hosts exist in freshwater habitats.