Bog Hoverfly vs European otter

Eristalis cryptarum compared with Lutra lutra

Key Differences

• Bog Hoverfly is Extinct while European otter is Vulnerable.

Taxonomic Classification

Rank	Bog Hoverfly	European otter
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Chordata (Chordates)
Class	Insecta (Insects)	Mammalia (Mammals)
Order	Diptera (Diptera)	Carnivora (Carnivorans)
Family	Syrphidae	Mustelidae (Weasels & Otters)
Genus	Eristalis	Lutra (Otters)
Species	Eristalis cryptarum	Lutra lutra

Evolutionary Relationship

Bog Hoverfly and European otter share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Bog Hoverfly

EX — Extinct

European otter

VU — Vulnerable

Trend: Stable →

Physical Characteristics

Attribute	Bog Hoverfly	European otter
Diet	—	Carnivore
Average Lifespan	—	10 years
Average Length	—	1.0 m
Average Weight	—	10.0 kg

Habitat & Geographic Range

Bog Hoverfly

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

European otter

Habitat

Typically found in diverse ecosystems where prey species are available.

Range

Found across Europe (6 countries). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Bog Hoverfly

The Bog Hoverfly (Eristalis cryptarum) is a species in the genus Eristalis. It is currently classified as Extinct on the IUCN Red List. Distributed across Belgium, Denmark, Norway, and Sweden.

European otter

Sleek semi-aquatic mustelid found along clean rivers, streams, and coastlines across Europe and Asia. European otters can reach 1.3 meters in length and are highly skilled fish hunters, using sensitive whiskers to detect prey movements. Requiring unpolluted water with abundant fish, they are an indicator species for freshwater ecosystem health. Once nearly extinct in Western Europe from hunting and pollution, populations have recovered significantly following water quality improvements.

Shared Countries

Both species can be found in 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden