The Palearctic species Bembidion femoratum and Amara communis (Coleoptera: Carabidae): new records and notes on modes of introduction to North America  Authors: Majka Ch.G.
Year: 2005
Public: Can. Entomol. 137: 532–538 (2005)
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The Palearctic species Amara communis (Panzer) and Bembidion femoratum Sturm
were both first reported from North America in 1992. Since that time a sizeable number of additional
specimens of both species have been found, which substantially expands their known range
on the continent. These records are summarized herein. The possible modes of introduction of
both species are discussed within the context of other introduced insects, particularly those first
found in Atlantic Canada. In the case of A. communis, the many coastal localities where it occurs
would seem to indicate that it was introduced in association with transatlantic marine traffic, possibly
the shipment of dry ballast. In the case of B. femoratum, the mode of introduction is less
clear. Possible associations with nursery stock, dry ballast, and the movement of aircraft are all
discussed. |
