Abstract
Abstract. Larinus turbinatus Gyllenhal, a Palearctic weevil that feeds on thistle species of the genera Cirsium and Carduus (Asteraceae: tribe Cardueae), is newly reported for North America. It was first collected by sweep net sampling of flowers of pasture thistle Cirsium pumilum (Nutt.) Spreng. at Fort Indiantown Gap, Lebanon County, Pennsylvania in late July 2011 and specimens were hand-collected from field thistle Cirsium discolor (Muhl. exWilld.) Spreng. at Gettysburg National Park, Adams County, Pennsylvania in late August 2012. This is the first published record of this Old World species in the Western Hemisphere. At present, five species of the genus Larinus are known as introduced into North America. These are L. turbinatus Gyllenhal, L. carlinae (Olivier) (known formerly as L. planus), L. curtus Hochhuth, L. obtusus Gyllenhal, and L. minutus Gyllenhal. Brief summaries of their hosts, distributions, biology and a key for their separation are provided.
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