Plant Health & Pest Prevention Services Pest Detection/Emergency Projects
DETECTION ADVISORY

November 19, 1998

PD101-98

Olive Fruit Fly (OLFF)

Los Angeles County

OLFF larvae were found at three new sites on November 17 and 18, 1998, in the Westwood area. All of the locations are near previous OLFF finds.

Westwood/West Los Angeles

New Larval Location

Pelham Avenue - November 17 - one second and 20 third instar larvae found in olive.

Pelham Avenue - November 17 - two third instar larvae found in olive.

Pelham Avenue - November 18 - one second and five third instar larvae found in olive.

CDFA inspectors Maria Ramirez and Antonio Urquieta are credited with finding the larvae.

Olive fruit fly does not respond to cuelure or methyl eugenol. CDFA has increase the McPhail trap density, as needed, to 80 traps per square mile in the core square mile and 40 McPhail traps per square mile in the eight adjacent square miles. In addition, CDFA is conducting a larval survey on find properties and their adjacents is continuing.

Since October 19, 1998, twenty-six olive fruit flies have been trapped at five sites in Westwood. Larvae have been found on five properties. CDFA has scheduled ground treatment with malathion bait of all olive trees within 200 meters of the finds to begin on November 16. Soil drench treatments with diazinon will be made to the larval properties and adjacents.

CDFA Insect Biosystematist Kevin Hoffman made the determinations.

SUMMARY - 1998 OLIVE FRUIT FLY FINDS
County	Adults Trapped	Date Last Adult Trapped	Larval Properties
Los Angeles	26	11/16/1998	5
Totals	26		5

Prepared by: John Pozzi