“Hovering harmfully,” by Gillian Vine, Otago Daily Times Online News, August 30, 2019
Narcissus Bulb Fly, Colorado Insect of Interest
Daffodil Fly – It’s the overhead smash that gets them! Suzy Wert, Old House Gardens, April 2016
“Yellow alert! Daffodil Killer is on the march,” by Daily Mail Reporter, March 24, 2014
Narcissus Bulb Fly, Leaflet No. 444, USDA, 1977
“The Bulb Flies of Narcissus,” Virginia Truck Experiment Station Bulletin No 60, 1927