Measuring the host preference of parasites: An aid in evaluating biotypes ofAnagrus epos [Hym.: Mymaridae]
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Populations of Anagrus epos Girault are being imported and evaluated for the biological control of variegated grape leafhopper, Erythroneura variabilis Beamer, a newly introduced pest of grapes in central California. To distinguish different biotypes, a field test was developed that quantifies host preference. E. epos collected from geographically isolated regions of western United States and northern Mexico showed different levels of preference towards the variegated leafhopper and its close relative the grape leafhopper, Erythroneura elegantula Osborn, a native to central California. Host preference values may aid in the identification of relased biotypes using leafhopper eggs on leaves sampled from release sites. © 1989 Lavoisier Abonnements.
author list (cited authors)
Pickett, C. H., Wilson, L. T., Flaherty, D. L., & Gonzaiez, D.