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Distribution in northeastern North America, sources of data other than DEBU are quoted in parentheses. 17 Sunius melanocephalus Fabricius (Campbell and Davies 1991, Hoebeke 1991, Byers et al. 2000) 18 Acylophorus agilis Smetana (Smetana 1971, 1978) 19 Bisnius cephalicus (Casey) (Smetana 1995, Paquin and Dupérré 2001) 20 Bisnius siegwaldii (Mannerheim) (Smetana 1995, Paquin and Dupérré 2001).
