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J. ent. Soc. Ont. Volume 145, 2014
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Journal of the Entomological Society of Ontario

Volume 145, 2014

 I. FROM THE EDITOR [PDF] 

 II. ARTICLE  

D.B. Lyons, K.L. Ryall, S.M. Paiero, G.C. Jones, and L. Van Seggelen. 2014. First records of Ptosima walshii (Coleoptera: Buprestidae) in Canada. J. ent. Soc. Ont. 145: 45–49.

J. ent. Soc. Ont. 145: 45–49

Scientific Note

Ptosima Dejean, 1833 (Coleoptera: Buprestidae) (Fig. 1) contains 10 extant species worldwide (Bellamy 2008) with four species occurring in North American (Nelson 1978, Nelson et al. 2008). Nelson (1978) keyed and redescribed the North American species. Plant genera records for Ptosima spp. include Crataegeus (Rosaceae), Cercis (Fabaceae) and Quercus (Fagaceae) (Paiero et al. 2012). Ptosima idolynae Frost, 1923 and P. laeta Waterhouse,1882 are confined to south central North America, whereas P. gibbicollis (Say, 1823) and P. walshii LeConte, 1863 are widely distributed in eastern North America. Bright (1987) stated that P. gibbicollis “probably occurs in southern Ontario”, but makes no mention of P. walshii. Paiero et al. (2012) mapped the distribution of P. gibbicollis as occurring in Ontario. They also mapped the host range of P. walshii, as a potential distributional range for the beetle, encompassing Manitoba, Ontario and Quebec, but no records were known for these Provinces. Ptosima walshii is considered “rarely collected” (MacRae 2006) and “infrequently encountered” (Paiero et al. 2012). Nelson (1978) stated that P. walshii had been reported from Illinois, Texas, Kansas and California, suggested that the California record was doubtful, and added new State distribution records for Iowa, Michigan, Minnesota, Mississippi, Missouri, Ohio and Wisconsin. Westcott (1991) provided compelling evidence that the California record was erroneous. Records for four states that border Canada—Michigan, Ohio, Wisconsin and Minnesota—are represented by a total of eight collections (Nelson 1978). The Michigan record was a single collection labeled “Ag. Coll. 20.V.1889” (Nelson 1978). Westcott (1991) reported a specimen from Oklahoma. Thus, the literature records confirmed by specimens include 11 States but no Provinces.
As part of a trapping study for the recently discovered European oak borer, Agrilus sulcicollis Lacordaire (Coleoptera: Buprestidae) in North America (Jendek and Grebennikov 2009, Haack et al. 2009), we collected numerous P. walshii adults in southwestern Ontario. These collections represent the first verified records of the species.

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