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Tenebrionidae (Coleoptera) of the Maritime Provinces of Canada

Published online by Cambridge University Press:  02 April 2012

Christopher G. Majka*
Affiliation:
Nova Scotia Museum, 1747 Summer Street, Halifax, Nova Scotia, Canada B3H 3A6
Patrice Bouchard
Affiliation:
Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada, K.W. Neatby Building, 960 Carling Avenue, Ottawa, Ontario, Canada K1A 0C6
Yves Bousquet
Affiliation:
Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada, K.W. Neatby Building, 960 Carling Avenue, Ottawa, Ontario, Canada K1A 0C6
*
1Corresponding author (e-mail: c.majka@ns.sympatico.ca).

Abstract

The Tenebrionidae of the Maritime Provinces of Canada are surveyed. Forty-eight species have been reported from the region. Eleven of these species (ten Palearctic and one Nearctic) have been introduced to the region, five of which are apparently now extirpated. Dates of first detection of these species are provided for each province and North America. Thirteen species are newly recorded in New Brunswick, 25 in Nova Scotia, and 15 on Prince Edward Island, for a total of 53 new provincial records. Of these, 18 species including Bolitophagus corticola Say, Neatus tenebrioides (Palisot de Beauvois), Helops gracilis Bland, Blapstinus substriatus Champion, Hymenorus obesus Casey, Hymenorus picipennis Casey, Hymenorus pilosus (Melsheimer), Mycetochara bicolor (Couper), Mycetochara binotata (Say), Mycetochara fraterna (Say), Platydema excavatum (Say), Platydema teleops Triplehorn, Corticeus praetermissus (Fall), Alobates pennsylvanicus (DeGeer), Haplandrus fulvipes (Herbst), Xylopinus saperdioides (Olivier), an undescribed species of Paratenetus Spinola, and an undescribed species of Neatus LeConte are newly recorded for the Maritime Provinces as a whole. One of these, Helops gracilis, is recorded for the first time in Canada. The fauna is discussed from the perspective of the patterns of distribution of species in the region and their possible underlying causes. Island faunas are discussed, as is the saproxylic component of the fauna, with a brief consideration of the importance of this trophic group in the dynamics of forest ecosystems in the region.

Résumé

Nous présentons une synthèse de la faune des coléoptères de la famille Tenebrionidae provenant des Provinces Maritimes du Canada. Quarante-huit espèces sont représentées dans la région. Des onze espèces envahissantes enregistrées auparavant dans la région (dont dix native de la région Paléarctique et une autre de l’Amérique du Nord), nous devons en soustraire cinq espèces qui n’ont pas été échantillonnées récemment. Une estimation des dates de premières introductions de ces espèces envahissantes dans chacune des Provinces Maritimes et en Amérique du Nord sont données. Un total de 53 nouvelles mentions provinciales sont présentées (13 pour le Nouveau-Brunswick, 25 pour la Nouvelle-Ecosse, et 15 pour l’Île-du-Pince-Edward). Les espèces suivantes sont reportées dans les Provinces Maritimes pour la première fois: Bolitophagus corticola Say, Neatus tenebrioides (Palisot de Beauvois), Helops gracilis Bland, Blapstinus substriatus Champion, Hymenorus obesus Casey, Hymenorus picipennis Casey, Hymenorus pilosus (Melsheimer), Mycetochara bicolor (Couper), Mycetochara binotata (Say), Mycetochara fraterna (Say), Platydema excavatum (Say), Platydema teleops Triplehorn, Corticeus praetermissus (Fall), Alobates pennsylvanicus (DeGeer), Haplandrus fulvipes (Herbst), Xylopinus saperdioides (Olivier), une espèce nouvelle du genre Paratenetus Spinola et une espèce nouvelle du genre Neatus LeConte. Helops gracilis est reportée pour la première fois au Canada. Les causes possibles pour expliquer la répartition géographique des espèces dans la région sont explorées. La faune saproxylique et la faune des îles de la région sont discutées plus spécifiquement. L’importance de la faune saproxylique dans les écosystèmes forestiers de la région est étudiée brièvement.

Type
Articles
Copyright
Copyright © Entomological Society of Canada 2008

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