The Canadian Entomologist


Alien true bugs (Hemiptera: Heteroptera) in Canada: composition and adaptations1

Geoffrey G.E. Scuddera1 c1 and Robert G. Foottita2

a1 Department of Zoology and Centre for Biodiversity Research, University of British Columbia, 6270 University Boulevard, Vancouver, British Columbia, Canada V6T 1Z4

a2 Systematic Entomology, Research Branch, Agriculture and Agri-Food Canada, Central Experimental Farm, Ottawa, Ontario, Canada K1A 0C6


The distribution, spread, and adaptations of the 81 alien heteropterous species recorded in Canada are summarized. Sixty-nine species had eastern introductions and 47 had western introductions; 35 were introduced separately on both coasts. Most of the alien species are mirids of European origin. Several of these alien mirids have adapted and become pests of fruit and other agricultural crops, and some have become useful predators. Only 3 have adapted and spread across the whole country.


Nous résumons la répartition l'étendue et les adaptations des 81 punaises (Heteroptera) exotiques au Canada. Soixante-neuf espèces sont venues de l'Est et 47 de l'Ouest. Trente-cinq de l'ensemble sont passées par les deux régions côtières. La plupart sont des mirides d'origine européenne. Certains mirides se sont adaptés, ravagent les récoltes de fruits et d'autres cultures ou sont des prédateurs utiles. Seuls 3 mirides se sont dispersés dans l'ensemble du pays.

(Received October 06 2004)

(Accepted October 14 2005)


c1 Corresponding author (e-mail:


1 Presented as part of “Adaptations and Constraints: a Symposium in Honour of Richard Ring” at the Joint Annual General Meeting of the Entomological Societies of Canada and British Columbia, 3 November 2003, Kelowna, British Columbia.