Journal of Chemical Ecology

, Volume 36, Issue 11, pp 1207–1210 | Cite as

A Syrphid Fly Uses Olfactory Cues to Find a Non-Yellow Flower

  • Clara Primante
  • Stefan Dötterl
Rapid Communication


Syrphid flies are frequent flower visitors, but little is known about the cues they use to find flowers. We determined the importance of visual and olfactory cues in a flight cage bioassay using Cirsium arvense (Asteraceae) flower heads and experienced Episyrphus balteatus (Diptera, Syrphidae). We tested the response of antennae of the flies to headspace inflorescence scent samples by using gas chromatography coupled to electroantennography (GC-EAD). The bioassays revealed that both sexes of experienced flies rely on olfactory, not visual, cues to find C. arvense flower heads. The GC-EAD measurements demonstrated that male and female flies have olfactory receptors for several of the compounds emitted by the inflorescences. These electroantennographic-active compounds may be responsible for the attraction of flies to the C. arvense flower heads. Among the compounds eliciting an antennal response are methyl salicylate and 2-phenylethanol, which were previously described as syrphid attractants. Overall, our study demonstrates for the first time that a syrphid fly uses olfactory and not visual cues to find a pollen/nectar host-plant.


Floral attraction Olfactory cues Visual cues Episyrphus balteatus Cirsium arvense Behavioral assay GC-EAD Asteraceae Diptera 



Gregor Aas helped with plant material and provided the greenhouse and Irmgard Schäffler participated in useful discussions. Lynn Amanda Staff, Joseph Woodring, and two anonymous referees gave valuable comments on an earlier version of the manuscript. CP was supported by a grant (AP2006-03067) from Ministerio de Educación y Ciencia-Spain.


  1. Dötterl, S., Füssel, U., Jürgens, A., and Aas, G. 2005. 1,4-Dimethoxybenzene, a floral scent compound in willows that attracts an oligolectic bee. J. Chem. Ecol. 31:2993–2998.CrossRefPubMedGoogle Scholar
  2. Harmel, N., Almohamad, R., Fauconnier, M. L., Du Jardin, P., Verheggen, F. J., Marlier, M., Haubruge, E., and Francis, F. 2007. Role of terpenes from aphid-infested potato on searching and ovoposition behaviour of Episyrphus balteatus. Insect Sci. 14:57–63.CrossRefGoogle Scholar
  3. Lunau, K. 1988. Innate and learned behaviour of flower-visiting hoverflies. Flower-dummy experiments with Eristalis pertinax (Scopoli) (Diptera, Syrphidae). Zool. Jb. Physiol. 92:487–499.Google Scholar
  4. Lunau, K. and Wacht, S. 1994. Optical releasers of the innate proboscis extension in the hoverfly Eristalis tenax L. (Syrphidae, Diptera). J. Comp. Physiol. A 174:575–579.Google Scholar
  5. Lunau, K., Hofmann, N., and Valentin, S. 2005. Response of the hoverfly species Eristalis tenax towards floral dot guides with colour transition from red to yellow (Diptera: Syrphidae). Entomol. Gen. 27:249–256.Google Scholar
  6. Majetic, C., Raguso, R. A., and Ashman, T.-L. 2009. The sweet smell of success: floral scent affects pollinator attraction and seed fitness in Hesperis matronalis. Funct. Ecol. 23:480–487.CrossRefGoogle Scholar
  7. Shi, J., Luo, Y.-B., Bernhardt, P., Ran, J.-C., Liu, Z.-J., and Zhou, Q. 2009. Pollination by deceit in Paphiopedilum barbigerum (Orchidaceae): a staminoide exploits the innate colour preferences of hoverflies (Syrphidae). Plant Biol. 11:71–28.Google Scholar
  8. Sutherland, J. P., Sullivan, M. S., and Poppy, G. M. 1999. The influence of floral character on the foraging behaviour of the hoverfly, Episyrphus balteatus. Entomol. Exp. Appl. 93:157–164.CrossRefGoogle Scholar
  9. Theis, N., Lerdau, M., and Raguso, R. A. 2007. The challenge of attracting pollinators while evading floral herbivores: patterns of fragrance emission in Cirsium arvense and Cirsium repandum (Asteraceae). Int. J. Plant Sci. 168:587–601.CrossRefGoogle Scholar
  10. Zhu, J. and Park, K.C. 2005. Methyl salicylate, a soybean aphid-induced plant volatile attractive to the predator Coccinella septempunctata. J. Chem. Ecol. 31:1733–1746.CrossRefPubMedGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  1. 1.CREAF/Centre de Recerca Ecològica i Aplicacions ForestalsUniversitat Autònoma de BarcelonaBellaterraSpain
  2. 2.Department of Plant SystematicsUniversity of BayreuthBayreuthGermany

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