Leptinotarsa decemlineata Say, 1824

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English Colorado potato beetle ISEIA: C3
Lëtzebuergesch Gromperekiewer(lek) EASIN
Français Doryphore de la pomme de terre Wikipedia: Wikipedia - English - Colorado potato beetle Wikipedia - Français - Doryphore de la pomme de terre Wikipedia - Deutsch - Kartoffelkäfer Nederlands
Deutsch Kartoffelkäfer Wikispecies: Wikispecies - Leptinotarsa decemlineata
Nederlands Coloradokever Back to the list of invertebrates

Report the species

Report Leptinotarsa decemlineata to the National Museum of Natural History.

Status and distribution in Luxembourg

Records of Leptinotarsa decemlineata Say, 1824 in Luxembourg. Data source: Recorder-Lux, iNaturalist & GBIF, 2020-02-27.

The invasion of the Grand Duchy of Luxembourg by the Colorado potato beetle started in 1936; the bug was first found on 23rd June 1936 in Steinsel-Müllendorf, then in Limpertsberg, Mamer and Neuhäuschen. In 1937 it was reported from Eischen, Finsterthal and Beyren. By 1938 the whole country was infested. The details of this invasion were published by Jos Massard (2000).

The distribution of the species is still widespread all over the country, but populations have sharply decreased, particularly due to the decline of potato production, e.g. from >17000 ha in 1939 to 800 in 1995 (Massard 2000: 212).

Only 6 occurrences of the species are documented in the Recorder database, ranging from 1968 to 2015 (06/02/2018).

Colorado beetles are a serious pest of potatoes. They may also cause significant damage to tomatoes and eggplants. Both adults and larvae feed on foliage and may skeletonise the crop.

Risk assessment

ISEIA protocol: C3 (3+1+1+1) (Ries et al. 2017: 68).


  • Massard, J. A., 2000. Le Doryphore et le Grand-Duché de Luxembourg (esquisse historique). Archives de l’Institut grand-ducal de Luxembourg, Section des sciences naturelles, physiques et mathématiques, NS 43: 175-217. (PDF 260 KB)
  • Ries, C., A. Arendt, C. Braunert, S. Christian, A. Dohet, A. Frantz, G. Geimer, M. Hellers, J. A. Massard, X. Mestdagh, R. Proess, N. Schneider & M. Pfeiffenschneider, 2017. Environmental impact assessment and black, watch and alert list classification after the ISEIA Protocol of invertebrates in Luxembourg. Bull. Soc. Nat. luxemb. 119: 63-70. [PDF 360 KB]

 Page content last updated on 2019-12-10. Last proofread by Caroline Grounds on 2019-12-10.