Coastal Flat-body vs Common Marsh-Mallow

Agonopterix yeatiana compared with Althaea officinalis

Taxonomic Classification

Rank	Coastal Flat-body	Common Marsh-Mallow
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Arthropoda (Arthropods)	Magnoliophyta (Flowering Plants)
Class	Insecta (Insects)	Magnoliopsida (Dicots)
Order	Lepidoptera (Butterflies & Moths)	Malvales (Malvales)
Family	Depressariidae	Malvaceae
Genus	Agonopterix	Althaea
Species	Agonopterix yeatiana	Althaea officinalis

Conservation Status

Coastal Flat-body

NT — Near Threatened

Common Marsh-Mallow

NT — Near Threatened

Physical Characteristics

Attribute	Coastal Flat-body	Common Marsh-Mallow
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Coastal Flat-body

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

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

Common Marsh-Mallow

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, montane grasslands and shrublands, and temperate coniferous forests, among 6 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 Africa (Algeria), Asia (India), Europe (13 countries), North America (Canada, United States), and South America (Peru). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Coastal Flat-body

Agonopterix yeatiana, the coastal flat-body, is a small moth in the family Depressariidae native to coastal and calcareous grassland habitats across western and northern Europe, with records from Belgium, Denmark, and Sweden. Moths in the family Depressariidae, commonly called flat-body moths due to the depressed posture they adopt when resting with wings held flat against the surface, are associated predominantly with umbellifer plants of the family Apiaceae as larval hosts. Agonopterix yeatiana larvae feed on wild carrot (Daucus carota), wild parsnip (Pastinaca sativa), and related coastal and grassland Apiaceae species, inhabiting the open, often calcareous or sandy habitats where these plants grow. Adult moths have greyish-brown forewing with a distinctive pattern of spots and dashes and reach approximately 8–12 millimeters in wingspan. The species is classified as Near Threatened by the IUCN, reflecting declines associated with the loss of traditional hay meadow management, coastal grassland degradation, and scrub encroachment that eliminates the open, flower-rich grassland habitats supporting its host plants. Agricultural intensification has reduced wild umbellifer populations significantly across lowland Europe, reducing food resources for larvae of specialist moths like A. yeatiana.

Common Marsh-Mallow

<em>Althaea officinalis</em>, the common marsh mallow, is a tall perennial herb in the family Malvaceae, native to Europe and western Asia and now widely distributed across Africa, Asia, Europe, North America, and South America. It is classified as Near Threatened on the IUCN Red List. This species typically grows in saltmarshes, brackish ditches, damp meadows, and coastal habitats, and is also cultivated in gardens for its ornamental and medicinal properties. Common marsh mallow produces pale pink, five-petalled flowers and lobed, velvety leaves covered in soft hairs. It has a long history of medicinal use, with roots, leaves, and flowers employed to soothe mucous membranes and treat respiratory and digestive ailments. The original marshmallow confection was prepared from the mucilaginous root extract of this species. It grows in a range of biome types including grasslands, wetlands, and forest edges. Habitat loss, particularly of coastal wetlands, represents the primary pressure on populations across its native range.