Howlett, Brad G., and Megan Gee. “The Potential Management of the Drone Fly (<i>Eristalis tenax</I&gt;) As a Crop Pollinator in New Zealand”. New Zealand Plant Protection 720 (July 27, 2019): 221-230. Accessed December 11, 2019. https://journal.nzpps.org/index.php/nzpp/article/view/304.