Leptoglossus occidentalis Heidemann, 1910

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English Western conifer seed bug ISEIA: B1 – Watch List
Lëtzebuergesch Amerikanesch Kiferwanz
Français Punaise américaine du pin Wikipedia: Wikipedia - English - Western conifer seed bug Wikipedia - Français - Punaise américaine du pin Wikipedia - Deutsch - Amerikanische Kiefernwanze Nederlands
Deutsch Amerikanische Kiefernwanze Wikispecies: Wikispecies - Leptoglossus occidentalis
Nederlands Bladpootrandwants Back to the list of invertebrates

Report the species

Report Leptoglossus occidentalis to the National Museum of Natural History.

Status and distribution in Luxembourg

Records of Leptoglossus occidentalis Heidemann, 1910 in Luxembourg. Data source: Recorder-Lux, iNaturalist & GBIF, 2020-04-03.

21 occurrences of Leptoglossus occidentalis from 2009 to 2017 are documented in the Recorder database.The species was first observed in Luxembourg by Guy Marson on 9th October 2009 in Steinfort (Schneider 2010).

Leptoglossus occidentalis is a North American bug native of the Rocky Mountains. It was observed for the first time in October 1999 in Europe, near Vicenza in Italy. Following several introductions to our continent, the expansion of the species has been very rapid. Leptoglossus occidentalis was reported in Switzerland in 2002, in Slovenia and Spain in 2003, in Croatia and Hungary in 2004, in Austria in 2005 and in France in 2006. In 2007 it was reported in Germany, the Czech Republic, the United Kingdom and Belgium as well as in Poland, and in 2008 in Bulgaria, Montenegro, Serbia and the Netherlands (excerpt translated from Schneider 2010).

Leptoglossus occidentalis in Echternach, wall of 1A rue des Romains, 15 October 2017. Photo by Gaby Geimer.

Leptoglossus occidentalis in Echternach, wall of 1A rue des Romains, 15 October 2017. Photo by Gaby Geimer.

Risk assessment

ISEIA protocol: B1 (3+3+2+1) = Watch List (Ries et al. 2017: 68).


  • 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]
  • Schneider, N., 2010. Découverte de Leptoglossus occidentalis Heidemann, 1910 et redécouverte de Lygaeus equestris (L., 1758) au Luxembourg (Insecta, Hemiptera, Heteroptera). Bull. Soc. Nat. luxemb. 111: 115-116. [PDF 238 KB]

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