Beech slender vs Big Finner

Parornix fagivora compared with Balaenoptera physalus

Key Differences

• Beech slender is Least Concern while Big Finner is Endangered.

Taxonomic Classification

Rank	Beech slender	Big Finner
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Chordata (Chordates)
Class	Insecta (Insects)	Mammalia (Mammals)
Order	Lepidoptera (Butterflies & Moths)	Cetacea (Whales & Dolphins)
Family	Gracillariidae	Balaenopteridae (Rorquals)
Genus	Parornix	Balaenoptera (Rorquals)
Species	Parornix fagivora	Balaenoptera physalus

Evolutionary Relationship

Beech slender and Big Finner share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Beech slender

LC — Least Concern

Big Finner

EN — Endangered

Physical Characteristics

Attribute	Beech slender	Big Finner
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Beech slender

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Russia, Sweden, and Ukraine.

Big Finner

Habitat

Found across multiple habitat types including tropical and subtropical dry broadleaf forests, flooded grasslands and savannas, and montane grasslands and shrublands, among 4 distinct biome types within the Neotropic biogeographic realm.

Range

Widely distributed across Asia (Taiwan), Europe (5 countries), and South America (Colombia, Ecuador, Venezuela). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Beech slender

The Beech slender (Parornix fagivora) is a species in the genus Parornix. It is currently classified as Least Concern on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.

Big Finner

Big Finner (Balaenoptera physalus) is classified as Endangered (EN) on the IUCN Red List. At high risk of extinction in the wild, with significant population decline and ongoing threats to survival.

Shared Countries

Both species can be found in 3 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇸🇪 Sweden