Brook Floater vs cloaked pug

Alasmidonta varicosa compared with Eupithecia abietaria

Key Differences

• Brook Floater is Vulnerable while cloaked pug is Least Concern.

Taxonomic Classification

Rank	Brook Floater	cloaked pug
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Arthropoda (Arthropods)
Class	Bivalvia (Bivalvia)	Insecta (Insects)
Order	Unionida (Unionida)	Lepidoptera (Butterflies & Moths)
Family	Unionidae	Geometridae
Genus	Alasmidonta	Eupithecia
Species	Alasmidonta varicosa	Eupithecia abietaria

Evolutionary Relationship

Brook Floater and cloaked pug share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Brook Floater

VU — Vulnerable

cloaked pug

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	cloaked pug
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brook Floater

Habitat

Native to North America, inhabiting ecosystems characteristic of the region.

Range

Found in United States. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

cloaked pug

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Europe (8 countries).

Brook Floater

The Brook Floater (Alasmidonta varicosa) is a species in the genus Alasmidonta. It is currently classified as Vulnerable on the IUCN Red List. Native to North America, inhabiting ecosystems characteristic of the region.

cloaked pug

The cloaked pug (Eupithecia abietaria) is a geometrid moth in the family Geometridae found across boreal and montane Europe, with populations extending from Scandinavia through the Alps and Carpathians into central Siberia. The adult wingspan measures approximately 20–25 mm, with the intricate grey, white, and dark cross-banded pattern typical of pug moths providing superb camouflage against spruce bark and lichen-covered surfaces. The species is closely associated with Norway spruce (Picea abies) and related conifers, whose developing cones serve as the principal larval foodplant. Larvae feed within the scales of ripening cones, making detection and study challenging. Adults fly in a single generation from June to August, active at night and attracted to light. The cloaked pug is characteristic of mature boreal coniferous forest and montane spruce woodland, habitats that have declined in extent across parts of Central Europe due to conversion to plantation forestry and changing forest management practices. Its conservation depends on the maintenance of naturally structured boreal and subalpine forests with abundant cone-bearing conifers.