Coastal Flat-body vs Complex-leaved Dandelion

Agonopterix yeatiana compared with Taraxacum subundulatum

Key Differences

Coastal Flat-body is Near Threatened while Complex-leaved Dandelion is Not Evaluated.

Taxonomic Classification

Rank	Coastal Flat-body	Complex-leaved Dandelion
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Arthropoda (Arthropods)	Magnoliophyta (Flowering Plants)
Class	Insecta (Insects)	Magnoliopsida (Dicots)
Order	Lepidoptera (Butterflies & Moths)	Asterales (Daisies & Sunflowers)
Family	Depressariidae	Asteraceae (Daisy Family)
Genus	Agonopterix	Taraxacum
Species	Agonopterix yeatiana	Taraxacum subundulatum

Conservation Status

Coastal Flat-body

NT — Near Threatened

Complex-leaved Dandelion

NE — Not Evaluated

Physical Characteristics

Attribute	Coastal Flat-body	Complex-leaved Dandelion
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.

Complex-leaved Dandelion

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Distributed across Denmark, Norway, and Sweden.

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.

Complex-leaved Dandelion

<em>Taraxacum subundulatum</em>, the complex-leaved dandelion, is a perennial herbaceous plant in the family Asteraceae belonging to the extraordinarily diverse and taxonomically complex genus Taraxacum, which contains hundreds of microspecies primarily reproducing via apomixis — asexual seed production without fertilisation. This species has been documented from Denmark, Norway, and Sweden, where it inhabits meadows, grasslands, roadsides, and disturbed ground typical of the Taraxacum genus across temperate Europe. Like other dandelions, it produces a basal rosette of typically lobed or undulate leaves, a hollow leafless scape, and a characteristic composite flower head of yellow ray florets that matures into the familiar globular seed head for wind dispersal. The species is Not Evaluated on the IUCN Red List, consistent with the treatment of most Taraxacum microspecies, whose abundance and taxonomic complexity make formal threat assessments difficult. Dandelions generally tolerate a wide range of environmental conditions and are resilient to disturbance. The complex-leaved dandelion likely plays typical dandelion ecological roles as an early-season nectar source for pollinators including bees and hoverflies, and as food for specialist insects. Biological traits including average lifespan, population size, and detailed morphological dimensions specific to <em>Taraxacum subundulatum</em> remain poorly documented given the challenges of distinguishing microspecies within the aggregate.