Erlen-Rindeneule vs Gemeiner Wasserschlauch

Acronicta alni compared with Utricularia vulgaris

Key Differences

• Erlen-Rindeneule is Least Concern while Gemeiner Wasserschlauch is Near Threatened.

Taxonomic Classification

Rank	Erlen-Rindeneule	Gemeiner Wasserschlauch
Kingdom	Animalia (Tier)	Plantae (Pflanzen)
Phylum	Arthropoda (Gliederfüßer)	Magnoliophyta (Flowering Plants)
Class	Insecta (Insekten)	Magnoliopsida (Dicots)
Order	Lepidoptera (Schmetterlinge)	Lamiales (Lippenblütlerartige)
Family	Noctuidae	Lentibulariaceae
Genus	Acronicta	Utricularia
Species	Acronicta alni	Utricularia vulgaris

Conservation Status

Erlen-Rindeneule

LC — Least Concern

Gemeiner Wasserschlauch

NT — Near Threatened

Physical Characteristics

Attribute	Erlen-Rindeneule	Gemeiner Wasserschlauch
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Erlen-Rindeneule

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Gemeiner Wasserschlauch

Habitat

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

Range

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

Erlen-Rindeneule

The Alder moth (Acronicta alni) is a species in the genus Acronicta. It is currently classified as Least Concern on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.

Gemeiner Wasserschlauch

The common bladderwort (<em>Utricularia vulgaris</em>) is a carnivorous aquatic plant belonging to the family Lentibulariaceae. It is classified as Near Threatened on the IUCN Red List, reflecting population declines linked to habitat loss and water quality degradation. The species has been recorded across diverse terrestrial tropical to temperate habitats in Belgium, Denmark, Norway, Sweden, and the United States. <em>Utricularia vulgaris</em> is typically found in slow-moving or still freshwater bodies such as ponds, lakes, ditches, and marshes. It is rootless and free-floating, with finely divided submerged stems bearing numerous small bladder-like traps that capture zooplankton, small aquatic invertebrates, and even mosquito larvae through a rapid suction mechanism. The plant produces yellow snapdragon-like flowers on emergent stems above the water surface during summer. Its carnivorous strategy allows it to supplement nutrients in nutrient-poor aquatic environments. Biological traits of this species remain poorly documented in the scientific literature.

Shared Countries

Both species can be found in 4 countries:

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