Silky Wave vs treble brown spot

Idaea dilutaria compared with Idaea trigeminata

Key Differences

• Silky Wave is Endangered while treble brown spot is Near Threatened.

Taxonomic Classification

Rank	Silky Wave	treble brown spot
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Arthropoda (Arthropods)	Arthropoda (Arthropods)
Class same	Insecta (Insects)	Insecta (Insects)
Order same	Lepidoptera (Butterflies & Moths)	Lepidoptera (Butterflies & Moths)
Family same	Geometridae	Geometridae
Genus same	Idaea	Idaea
Species	Idaea dilutaria	Idaea trigeminata

Evolutionary Relationship

Silky Wave and treble brown spot share a common ancestor at the Genus level: Idaea.

Conservation Status

Silky Wave

EN — Endangered

treble brown spot

NT — Near Threatened

Physical Characteristics

Attribute	Silky Wave	treble brown spot
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Silky Wave

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium and Sweden. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

treble brown spot

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium and Sweden. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Shared Countries

Both species can be found in 2 countries:

🇧🇪 Belgium 🇸🇪 Sweden