The Buprestidae (Coleoptera) of Minnesota, with a Discussion of the Emerald Ash Borer, Agrilus planipennis Fairmaire Author Hallinen, Marie J. Author Steffens, Wayne P. Author Schultz, Jennifer L. Author Aukema, Brian H. text The Coleopterists Bulletin 2021 2021-03-20 75 1 173 190 http://dx.doi.org/10.1649/0010-065x-75.1.173 journal article 10.1649/0010-065X-75.1.173 1938-4394 4837088 7. Agrilus audax Horn, 1891 New State Record: Chisago County , Taylor Falls Elementary , Taylor Falls , 45.40651°N , 92.65621°W , 29 July 2017 , M. Hallinen , collected at C. fumipennis nesting site . County Records ( n = 2): Goodhue and Chisago. Collection Dates: 7–29 July. Minnesota Hosts: Unspecified in collection records. Larval host recorded as Ulmus fulva Muhl. (Ulmaceae) . Adults also on Quercus macrocarpa . Collection Method: As C . fumipennis prey.