Arctic Smudge vs common greasewort

Plutella haasi compared with Aneura pinguis

Key Differences

• Arctic Smudge is Near Threatened while common greasewort is Least Concern.

Taxonomic Classification

Rank	Arctic Smudge	common greasewort
Kingdom	Animalia (動物)	Plantae (植物)
Phylum	Arthropoda (節足動物)	Marchantiophyta (苔類)
Class	Insecta (昆虫)	Jungermanniopsida (Jungermanniopsida)
Order	Lepidoptera (チョウ目)	Metzgeriales (Metzgeriales)
Family	Plutellidae	Aneuraceae
Genus	Plutella	Aneura
Species	Plutella haasi	Aneura pinguis

Conservation Status

Arctic Smudge

NT — Near Threatened

common greasewort

LC — Least Concern

Physical Characteristics

Attribute	Arctic Smudge	common greasewort
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Arctic Smudge

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

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

common greasewort

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (6 countries), North America (United States), and South America (Brazil, Colombia).

Arctic Smudge

The Arctic Smudge (Plutella haasi) is a species in the genus Plutella. It is currently classified as Near Threatened on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.

common greasewort

<em>Aneura pinguis</em>, commonly known as common greasewort, is a liverwort belonging to the genus Aneura within the family Aneuraceae. This cryptogamic plant inhabits ecosystems across Asia, Europe, and North America, thriving in moist or waterlogged environments. Its range encompasses Taiwan in Asia, six European countries, the United States in North America, and Brazil and Colombia in South America, indicating a broad geographic distribution across multiple continents. Common greasewort is assessed as Least Concern on the IUCN Red List. The species typically forms flat, ribbon-like thalli in damp habitats such as stream banks, wet rocks, and boggy ground. Biological traits of this species remain poorly documented in the scientific literature.

Shared Countries

Both species can be found in 2 countries:

🇳🇴 Norway 🇸🇪 Sweden