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© Etienne Branquart, Belgian Biodiversity Platform
© Gilles San Martin
© Etienne Branquart, Belgian Biodiversity Platform
© Gilles San Martin
© Louis Hautier
Harmonia axyridis - Harlequin ladybird

French name:  Coccinelle asiatique
Dutch name: Veelkleurig aziatisch lieveheersbeestje
Family: Coccinellidae
Group: Arthropods
Origin: Asia
Habitat: terrestrial
Introduction:  biological control
ISEIA Score : 11
Naturalization in Belgium
First observation in the wild: 2000
Invasion stage: spread
Spatial distribution: widespread
Reproduction in the wild: yes
Dispersion potential: high
Natural habitats: high
More on invasiveness: Lives in a very wide range of habitats: farmlands, orchards, wetlands, forest margins. Seems to avoid deep forest habitats.
Distribution in Belgium
Established populations
absent from district
isolated populations (1-5 localities per district)
widespread (>5 localities per district)

Impacts on Species
Predation / Herbivory: high
Competition: high
Disease transmission: low
Genetic effects: low
Impacts on Ecosystems
Nutrient cycling: low
Physical alteration: low
Natural successions: low
Food web alteration: likely
More on impacts: H. axyridis is a strong intraguild predator and is able to displace native ladybird species. Hence, population collapse of the two-spot ladybird Adalia bipunctata is largely attributable to its rapid expansion in North America and Europe. The arlequin ladybird is also known to invade houses in winter.
Data Source & References
Authors: Adriaens Tim, Branquart Etienne, De Clercq Patrick and Grégoire Jean-Claude
Published on:  11 June 2007
Adriaens, T, Branquart, E. & Maes, D. (2003)
The Multicoloured Asian Ladybird Harmonia axyridis Pallas (Coleoptera : Coccinellidae), a threat for native aphid predators in Belgium?
Belg. J. Zool., 133 (2) : 201-87
Alyokhin, A. & Sewell, G. (2004)
Changes in a lady beetle community following the establishment of three alien species.
Biological Invasions 6: 463-471.
Colunga-Garcia, M. & Gage, S.H. (1998)
Arrival, establishment, and habitat use of the multicouloured Asian lady beetle (Coleoptera: Coccinellidae) in a Michigan landscape.
Environmental Entomology 27(6): 1574-1580.
Cottrell, T.E. & Yeargan, K.V. (1998)
Intraguild predation between an introduced lady beetle, Harmonia axyridis (Coleoptera: Coccinellidae), and a native lady beetle, Coleomegilla maculata (Coleoptera: Coccinellidae).
Journal of the Kansas Entomological Society 71(2): 159-163
Dixon, A.F.G. (2000)
Insect predator-prey dynamics; ladybird beetles and biological control.
Cambridge University Press, 257 pp.
Harmon, J.P., Stephens, E. & Losey, J (2007)
The decline of native ladybirds (Coleoptera: Coccinellidae) in the United States and Canada.
J. Insect Conserv. 11: 85-94.
Kajita, Y., Takano, F., Yasuda, H. & Evans, E. W. (2006)
Interactions between introduced and native predatory ladybirds (Coleoptera, Coccinellidae): factors influencing the success of species introductions.
Ecological Entomology 31(1): 58-67
Sato, S. & Dixon, A.F.G. (2004)
Effect of intraguild predation on the survival and development of three species of aphidophagous ladybirds: consequences for invasive species.
Agricultural and Forest Entomology 6: 21-24.
Snyder, W.E., Clevenger, G.M. & Eigenbrode, S.D. (2004)
Intraguild predation and successful invasion by introduced ladybird beetles.
Oecologia 140: 559-565.
Van Rijn, P.C.J., Burgio, G. & Thomas, M.B. (2005)
Impact of intraspecific and intraguild predation on predator invasion and coexistence: can exotic ladybeetles displace native species?
Second International Symposium on Biological Control of Arthropods.
With, K.A., Pavuk, D.M., Worchuck J.L., Oates, R.K. & Fisher, J.L. (2002)
Threshold effects of landscape structure on biological control in agroecosystems.
Ecological Applications 12: 52-65.
Yasuda, H. & Katsuhiro, S. (1997)
Cannibalism and interspecific predation in two predatory ladybirds in relation to prey abundance in the field.
Entomophaga, 42(1-2): 153-163.
Yasuda, H., Evans, W.E., Kajita, Y., Urakawa, K. & Takizwa, T. (2004)
Asymmetric larval interactions between introduced and indigenous ladybirds in North America.
Oecologia 141: 722-731.
Yasuda, H., Kikuchi, T., Kindlmann, P. & Sato, S. (2001)
Relationships between attack and escape rates, cannibalism, and intraguild predation in larvae of two predatory ladybirds.
Journal of Insect Behavior 14(3): 373-384.

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