Biology of <i>Erythroneura elegantula</i> and <i>E. ziczac</i> (Homoptera:Cicadellidae) on <i>Vitis vinifera</i> in Southcentral Washington

Authors

  • J. D. Wells Irrigated Agriculture Research and Extension Center Washington State University Prosser WA 99350
  • W. W. Cone Irrigated Agriculture Research and Extension Center Washington State University Prosser WA 99350

Abstract

The western grape leafhopper, Erythroneura elegantula Osborn, and the Virginia creeper leafhopper, Erythroneura ziczac Walsh, were the only species of leafhoppers found colonizing grapevines, Vitis vinifera (L.), in southcentral Washington. Other Cicadalids collected did not colonize. Where the mymarid parasitoid, Anagrus epos, was found, the predominant leafhopper was E. elegantula. In the absence of A. epos, E. ziczac seemed to be the more abundant. E. ziczac quickly dominated a mixed population of both species in a greenhouse. On heavily damaged grape leaves, E. ziczac eggs remained surrounded by green tissue whereas E. elegantula eggs were not. This suggests the presence of a repellent or anti-feedant with E. ziczac eggs. Development time for E. elegantula averaged 402.6 D° which is much shorter than previously published times, and for E. ziczac averaged 390.5 D°.

Downloads

Issue

Vol. 86 (1989): Journal of the Entomological Society of British Columbia

Section

Articles

License

Authors who publish with the Journal of the Entomological Society of British Columbia agree to the following terms:

-Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.

-Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.

-Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).