Attributes / relations provided by
♦ 1Butterflies of Canada, Canadian Biodiversity Information Facility
♦ 2Ecology of Commanster♦ 3The reproductive ecology of Medicago citrina (Font Quer) Greuter (Leguminosae): a bee-pollinated plant in Mediterranean islands where bees are absent, C. Pérez-Bañón, A. Juan, T. Petanidou, Ma A. Marcos-García and M. B. Crespo, Plant Systematics and Evolution Volume 241, Numbers 1-2, 29-46 (2003)
♦ 4Predator-Prey Database for the family Asilidae (Hexapoda: Diptera) Prepared by Dr. Robert Lavigne, Professor Emeritus, University of Wyoming, USA and Dr. Jason Londt (Natal Museum, Pietermaritzburg)
♦ 5del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.).
Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
♦ 6Robertson, C.
Flowers and insects lists of visitors of four hundred and fifty three flowers. 1929. The Science Press Printing Company Lancaster, PA.