Jacopo Rossi; Ursula Gamba; Massimo Pinna; Sandra Spagnolo; Cristina Visentin; Alberto Alma (2006). "Hoverflies in organic apple orchards in north-western Italy"(PDF). Bulletin of Insectology. 59 (2). Bologna: Facolta' Di Agraria Universita' Di Bologna: 111–114. ISSN1721-8861. Retrieved 8 January 2009.
doi.org
Santos Rojo; Keith R. Hopper; M. Angeles Marcos-García (2004). "Fitness of the hover flies Episyrphus balteatus and Eupeodes corollae faced with limited larval prey". Journal Entomologia Experimentalis et Applicata. 81 (1). Springer Netherlands: 53–59. doi:10.1007/BF00187838. ISSN0013-8703.
hccnet.nl
home.hccnet.nl
Van Veen, M. (2004) Hoverflies of Northwest Europe: identification keys to the Syrphidae. 256pp. KNNV Publishing, Utrecht.addendum
Coe, R.L. (1953) Diptera: Syrphidae. Handbks.ident.Br.insects, 10(1): 1-98. R.ent.Soc.London. pdfArchived 2018-10-04 at the Wayback Machine
web.archive.org
Coe, R.L. (1953) Diptera: Syrphidae. Handbks.ident.Br.insects, 10(1): 1-98. R.ent.Soc.London. pdfArchived 2018-10-04 at the Wayback Machine
worldcat.org
search.worldcat.org
Santos Rojo; Keith R. Hopper; M. Angeles Marcos-García (2004). "Fitness of the hover flies Episyrphus balteatus and Eupeodes corollae faced with limited larval prey". Journal Entomologia Experimentalis et Applicata. 81 (1). Springer Netherlands: 53–59. doi:10.1007/BF00187838. ISSN0013-8703.
Jacopo Rossi; Ursula Gamba; Massimo Pinna; Sandra Spagnolo; Cristina Visentin; Alberto Alma (2006). "Hoverflies in organic apple orchards in north-western Italy"(PDF). Bulletin of Insectology. 59 (2). Bologna: Facolta' Di Agraria Universita' Di Bologna: 111–114. ISSN1721-8861. Retrieved 8 January 2009.