About Ragwort Flea Beetle
A small black flea beetle that feeds on ragwort plants. Successfully used as a biological control agent for invasive ragwort in Australia and New Zealand. Larvae mine in roots.
Did You Know?
One of the most successful biological control agents ever used, dramatically reducing ragwort in multiple countries.
How to Identify Ragwort Flea Beetle
Ragwort Flea Beetle (Longitarsus jacobaeae) belongs to the order Coleoptera, family Chrysomelidae. Adults typically measure 2-3 mm.
Ragwort Flea Beetle Habitat
Ragwort Flea Beetle is found in farmland habitats, particularly across Europe. This species has adapted to thrive in its preferred environment, where it can find suitable food sources and shelter.
Ragwort Flea Beetle Diet and Feeding
Ragwort Flea Beetle feeds on plant roots, typically during its larval stage. Root feeders can affect plant health and are sometimes considered agricultural pests.
Where Is Ragwort Flea Beetle Found?
Ragwort Flea Beetle can be found in Europe, where it inhabits farmland environments. Its distribution is influenced by climate, food availability, and habitat suitability.
Distribution Map
Where Ragwort Flea Beetle can be found
Is Ragwort Flea Beetle Dangerous?
Ragwort Flea Beetle is generally harmless to humans. It does not bite or sting and poses no significant health risk. Like most insects, it prefers to avoid human contact and will typically flee rather than confront a perceived threat.
Ragwort Flea Beetle Role in Nature
Ragwort Flea Beetle is part of the food web as a primary consumer, feeding on plant material. It serves as an important food source for birds, bats, amphibians, and other insectivores, connecting plant energy to higher trophic levels.
Seasonal Activity
Frequently Asked Questions About Ragwort Flea Beetle
What does Ragwort Flea Beetle look like?
The Ragwort Flea Beetle typically measures 2-3 mm.
Where is Ragwort Flea Beetle found?
The Ragwort Flea Beetle is found in Europe and typically inhabits farmland environments.
What does Ragwort Flea Beetle eat?
The Ragwort Flea Beetle feeds on plant roots.
Is Ragwort Flea Beetle dangerous to humans?
The Ragwort Flea Beetle is generally harmless to humans. It does not bite or sting and poses no significant health risk.
What is an interesting fact about Ragwort Flea Beetle?
One of the most successful biological control agents ever used, dramatically reducing ragwort in multiple countries.
Cite This Page
APA:
InsectDiscover. (2026). Ragwort Flea Beetle (Longitarsus jacobaeae). Retrieved from https://insectdiscover.com/insect/ragwort-flea-beetle
MLA:
"Ragwort Flea Beetle." InsectDiscover, https://insectdiscover.com/insect/ragwort-flea-beetle.