Utah Pest News Summer 2010

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CAPS Update

adult european grapevine moth
Figure 1.  Adult European Grapevine Moth

As the name suggests, the European grapevine moth (Lobesia botrana) is a troublesome pest of grapes throughout Europe, Asia, and Northern Africa, but it also attacks a variety of other fruits. Despite the fact that introduction of this pest was considered unlikely in the U.S., it was first detected in Napa Valley, California in October 2009, and has since been found in five California counties, resulting in quarantines.

These moths usually have three generations per year. The larvae feed on flowers, buds, and mature fruit. Damage to fruit may also lead to secondary fungal infections. Hosts include plants from 27 different families, but only a few species within each family are at risk.

In Utah, potential hosts include grape, blackberry, cherry, and peach. In response to the threat posed by this invasive species, the Cooperative Agricultural Pest Survey (CAPS) has begun monitoring cherry and peach orchards in Northern Utah. Please be on the lookout, and if you believe you’ve found a European grapevine moth, contact Cory Vorel, USU CAPS Coordinator (cory.vorel@usu.edu).

-Cory Vorel, USU CAPS Coordinator