ColeopteraChrysomelidae

Brooklime Leaf Beetle

Prasocuris junci

This record describes Prasocuris junci (species). Recorded family: Chrysomelidae. Recorded order: Coleoptera.

Identification and Appearance

Brooklime Leaf Beetle - Prasocuris junci

Size: 4 to 5 mm. Prasocuris junci is a very dark metallic blue or occasionally dark green beetle. Water margins where Brooklime ( Veronica beccabunga ) and Water-speedwells are present. Prasocuris junci grazes on leaves of Brooklime and Water-speedwells, but is also occasionally found on other plants such as Fool's Water-cress. Widespread and fairly frequent in Britain. No additional images available for this species.

Classification

Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Genus
Prasocuris

Imported taxonomy record. Source availability varies; see the source references and editorial policy below.

Habitat and Range

Habitat

Water margins where Brooklime (

Seasonal Activity

Late March to early September.

Diet and Behavior

Life History

Prasocuris junci

Additional species information

Recorded status

Widespread and fairly frequent in Britain.

About Primitive Winged Insects: the wider group

Order-level background for Coleoptera, the group containing Prasocuris junci. Species-specific details appear above.

Group overview

Coleoptera is the largest order of insects with over 400,000 described species, representing ~25% of all known animal species and ~40% of all insects. In the U.S. alone, nearly 30,000 beetle species have been identified.

Ecological role of the group

Beetles are prominent decomposers, especially in forests, breaking down dead wood and recycling nutrients. As predators, they reduce populations of pest insects. Many species are also important pollinators of flowering plants.

Economic and practical significance of the group

Beetles have major economic significance: leaf beetles (Chrysomelidae) and weevils (Curculionoidea) are among the most destructive agricultural pests globally, costing billions annually, while predatory species like ladybugs provide natural pest control.

Recorded sources for this group: Britannica, Smithsonian, NCSU Entomology. Imported estimates may describe particular regions or reporting periods.

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Photos of Brooklime Leaf Beetle (5)

Brooklime Leaf Beetle - photo 1
Brooklime Leaf Beetle - photo 2
Brooklime Leaf Beetle - photo 3
Brooklime Leaf Beetle - photo 4
Brooklime Leaf Beetle - photo 5

Frequently Asked Questions About Brooklime Leaf Beetle

What is Brooklime Leaf Beetle?

Brooklime Leaf Beetle (Prasocuris junci) is a species in the family Chrysomelidae, within the order Coleoptera.

How big is Brooklime Leaf Beetle?

4 to 5 mm. Prasocuris junci is a very dark metallic blue or occasionally dark green beetle.

Where is Brooklime Leaf Beetle found?

Habitat: Water margins where Brooklime (

When is Brooklime Leaf Beetle active?

Brooklime Leaf Beetle: seasonal activity - Late March to early September..

What is the life cycle of a Brooklime Leaf Beetle?

Prasocuris junci