Brindled Flat-body vs Common seabird tick

Agonopterix arenella compared with Ixodes uriae

Key Differences

• Brindled Flat-body is Least Concern while Common seabird tick is Not Evaluated.

Taxonomic Classification

Rank	Brindled Flat-body	Common seabird tick
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Arthropoda (節足動物)	Arthropoda (節足動物)
Class	Insecta (昆虫)	Arachnida (クモガタ類)
Order	Lepidoptera (チョウ目)	Ixodida (マダニ)
Family	Depressariidae	Ixodidae
Genus	Agonopterix	Ixodes
Species	Agonopterix arenella	Ixodes uriae

Evolutionary Relationship

Brindled Flat-body and Common seabird tick share a common ancestor at the Phylum level: Arthropoda. (節足動物)

Conservation Status

Brindled Flat-body

LC — Least Concern

Common seabird tick

NE — Not Evaluated

Physical Characteristics

Attribute	Brindled Flat-body	Common seabird tick
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brindled Flat-body

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Common seabird tick

Habitat

Typically found in terrestrial habitats from forests to deserts.

Range

Distributed across Norway and Sweden.

Brindled Flat-body

The Brindled Flat-body (Agonopterix arenella) is a species in the genus Agonopterix. It is currently classified as Least Concern on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.

Common seabird tick

<em>Ixodes uriae</em>, the common seabird tick, is a hard tick in the family Ixodidae, order Ixodida, distributed across subarctic and subantarctic regions with records from Norway and Sweden. This species is an obligate ectoparasite that specializes in feeding on colonial seabirds, including auks, penguins, and petrels, making it one of the few tick species with a genuinely circumpolar distribution tied to its avian hosts. <em>Ixodes uriae</em> typically infests birds in their nesting colonies, where dense aggregations and repeated site fidelity by hosts facilitate transmission. Beyond its direct parasitic impact, this tick serves as a vector for various pathogens, including Borrelia spirochetes and tick-borne encephalitis-related viruses, making it of scientific interest for disease ecology in seabird populations. The species has not been formally evaluated by the IUCN, and its conservation status remains Not Evaluated. Biological traits for this species remain poorly documented in the scientific literature, including comprehensive data on average lifespan under natural conditions, body dimensions across life stages, weight, and the full range of its host and pathogen associations.

Shared Countries

Both species can be found in 2 countries:

🇳🇴 Norway 🇸🇪 Sweden