Black Laceweaver vs Clustered Feather-moss

Amaurobius ferox compared with Rhynchostegium confertum

Key Differences

Black Laceweaver is Least Concern while Clustered Feather-moss is Near Threatened.

Taxonomic Classification

Rank	Black Laceweaver	Clustered Feather-moss
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Arthropoda (Arthropods)	Bryophyta
Class	Arachnida (Arachnids)	Bryopsida (Bryopsida)
Order	Araneae (Araneae)	Hypnales (Hypnales)
Family	Amaurobiidae	Brachytheciaceae
Genus	Amaurobius	Rhynchostegium
Species	Amaurobius ferox	Rhynchostegium confertum

Conservation Status

Black Laceweaver

LC — Least Concern

Clustered Feather-moss

NT — Near Threatened

Physical Characteristics

Attribute	Black Laceweaver	Clustered Feather-moss
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.

Clustered Feather-moss

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Found across Europe (6 countries). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.

Clustered Feather-moss

Rhynchostegium confertum, the clustered feather moss, is a pleurocarpous moss in the family Brachytheciaceae distributed across Europe, where it grows on rocks, walls, tree bases, and compacted soil in a variety of habitats including woodland, gardens, churchyards, and urban environments. The plants form dense, bright green to yellowish-green mats with pinnately branched stems bearing small, ovate-lanceolate leaves. This species is listed as Near Threatened by the IUCN, reflecting concerns about population declines in parts of its European range, possibly related to air quality changes, habitat alteration, and drought. Brachytheciaceae mosses are common components of temperate and boreal flora, and R. confertum is one of the more urban-tolerant members of the family, occurring even in heavily built environments. Like all pleurocarpous mosses, R. confertum spreads vegetatively through fragmentation and produces spores from upright, slender sporophytes during the reproductive season. It contributes to moisture retention on substrates and provides microhabitats for invertebrates in urban and semi-natural environments.