Common Yellow Conch vs Large-flowered Evening-primrose

Agapeta hamana compared with Oenothera glazioviana

Key Differences

• Common Yellow Conch is Least Concern while Large-flowered Evening-primrose is Not Evaluated.

Taxonomic Classification

Rank	Common Yellow Conch	Large-flowered Evening-primrose
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Arthropoda (Arthropods)	Magnoliophyta (Flowering Plants)
Class	Insecta (Insects)	Magnoliopsida (Dicots)
Order	Lepidoptera (Butterflies & Moths)	Myrtales (Myrtales)
Family	Tortricidae	Onagraceae
Genus	Agapeta	Oenothera
Species	Agapeta hamana	Oenothera glazioviana

Conservation Status

Common Yellow Conch

LC — Least Concern

Large-flowered Evening-primrose

NE — Not Evaluated

Physical Characteristics

Attribute	Common Yellow Conch	Large-flowered Evening-primrose
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common Yellow Conch

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Large-flowered Evening-primrose

Habitat

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

Range

Widely distributed across Africa (5 countries), Asia (5 countries), Europe (29 countries), North America (Canada, United States), Oceania and the Pacific (Australia), and South America (4 countries).

Common Yellow Conch

<em>Agapeta hamana</em>, the common yellow conch moth, is a small moth in the family Tortricidae. It is widely distributed across Europe and central Asia, ranging from Britain and Scandinavia eastward through much of the Palearctic region. The species inhabits dry grasslands, heathlands, chalk downlands, and scrubby habitats where its larval host plants are found. Adult moths display distinctive pale yellow to golden-yellow forewings with irregular brown or reddish-brown markings near the wingtip, forming a pattern that resembles the shell of a conch, lending the species its common name. The wingspan typically measures around 15–22 mm. Biological traits such as average adult lifespan, precise body weight, and detailed population data remain poorly documented in consolidated scientific literature. Larvae feed internally on the roots of thistles and knapweeds, particularly <em>Centaurea</em> and <em>Cirsium</em> species. Adults fly from June to August and are frequently attracted to light. <em>Agapeta hamana</em> has been investigated as a potential biological control agent for invasive knapweed species in North America, where it has been introduced experimentally. The species is assessed as Least Concern given its broad distribution and stable habitat associations.

Shared Countries

Both species can be found in 4 countries:

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