Common Blue Damselfly vs Common Yellow Conch

Enallagma cyathigerum compared with Agapeta hamana

Taxonomic Classification

Rank	Common Blue Damselfly	Common Yellow Conch
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum same	Arthropoda (节肢动物门)	Arthropoda (节肢动物门)
Class same	Insecta (昆蟲綱)	Insecta (昆蟲綱)
Order	Odonata (蜻蜓目)	Lepidoptera (鱗翅目)
Family	Coenagrionidae	Tortricidae
Genus	Enallagma	Agapeta
Species	Enallagma cyathigerum	Agapeta hamana

Evolutionary Relationship

Common Blue Damselfly and Common Yellow Conch share a common ancestor at the Class level: Insecta. (昆蟲綱)

Conservation Status

Common Blue Damselfly

LC — Least Concern

Common Yellow Conch

LC — Least Concern

Physical Characteristics

Attribute	Common Blue Damselfly	Common Yellow Conch
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common Blue Damselfly

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Luxembourg, Norway, and Sweden.

Common Yellow Conch

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Common Blue Damselfly

普通蓝豆娘（Enallagma cyathigerum）在IUCN红色名录中被列为无危（LC）。分布广泛，数量丰富，种群稳定，无迫切的保护关切。

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