Common Flat-body vs 普通燕鷗

Agonopterix heracliana compared with Sterna hirundo

Key Differences

• Common Flat-body is Least Concern while 普通燕鷗 is Endangered.

Taxonomic Classification

Rank	Common Flat-body	普通燕鷗
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum	Arthropoda (节肢动物门)	Chordata (脊索动物门)
Class	Insecta (昆蟲綱)	Aves (鳥綱)
Order	Lepidoptera (鱗翅目)	Charadriiformes (鸻形目)
Family	Depressariidae	Laridae
Genus	Agonopterix	Sterna
Species	Agonopterix heracliana	Sterna hirundo

Evolutionary Relationship

Common Flat-body and 普通燕鷗 share a common ancestor at the Kingdom level: Animalia. (动物界)

Conservation Status

Common Flat-body

LC — Least Concern

普通燕鷗

EN — Endangered

Physical Characteristics

Attribute	Common Flat-body	普通燕鷗
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common Flat-body

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

普通燕鷗

Habitat

Found across multiple habitat types including tropical and subtropical dry broadleaf forests, flooded grasslands and savannas, and montane grasslands and shrublands, among 9 distinct biome types spanning the Neotropic and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Europe (7 countries), North America (United States), and South America (Colombia, Ecuador, Venezuela). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Common Flat-body

<em>Agonopterix heracliana</em> is a moth belonging to the family Depressariidae within the order Lepidoptera. Commonly known as the common flat-body, this species is named for the flattened resting posture characteristic of the genus Agonopterix. The species is classified as Least Concern on the IUCN Red List, with no indication of significant population decline. <em>Agonopterix heracliana</em> is distributed across northwestern Europe, with documented occurrences in Belgium, Denmark, Norway, and Sweden. Larvae of this species are typically associated with plants in the family Apiaceae, particularly hogweed (Heracleum sphondylium) and related umbellifers, upon which they feed while sheltering in rolled or folded leaves. Adults are typically brownish with subtle markings and are active from late summer through winter and early spring, overwintering as adults — an unusual life history trait among moths. The species inhabits hedgerows, woodland margins, and meadows where its host plants are abundant. Biological traits of this species remain poorly documented in the scientific literature.

普通燕鷗

普通燕鸥（Sterna hirundo）在IUCN红色名录中被列为濒危（EN）。在野外面临较高的灭绝风险，种群数量显著下降，生存威胁持续存在。

Shared Countries

Both species can be found in 4 countries:

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