Plant Health & Pest Prevention Services
Pest Detection/Emergency Projects 
DETECTION ADVISORY
November 17, 1998

 PD98-98

Olive Fruit Fly (OLFF)

Los Angeles County

Thirteen OLFF were trapped on November 14 and 16, 1998, in the Westwood area. All of the finds are near previous OLFF finds. Larvae were also found.

Westwood/West Los Angeles

Twelve OLFF were trapped at a site that had previous finds. One unmated female was trapped a new location along Pelham Avenue. In addition,OLFF larvae were found at a property that larvae have been previously detected. All of the finds are near previous OLFF finds.

New Trap Location

Pelham Avenue - November 16 - 1 unmated female and 1 male found in a McPhail trap placed in an olive.

Previous Trap Location

Holman Avenue - November 14 - 1 male found in a panel/pherocon trap placed in an olive.

Santa Monica Blvd - November 14 - 1 male found in a panel/pherocon trap placed in an olive.

Santa Monica Blvd - November 14 - 1 male found in a McPhail trap placed in an olive.

Santa Monica Blvd - November 14 - 1 mated female found in a McPhail trap placed in an olive.

Santa Monica Blvd - November 16 - 1 male found in a panel/pherocon trap placed in an olive.

Santa Monica Blvd - November 16 - 1 male found in a McPhail trap placed in an olive.

Santa Monica Blvd - November 16 - 1 male found in a panel/pherocon trap placed in an olive.

Santa Monica Blvd - November 16 - 1 mated female and 1 male found in a panel/pherocon trap placed in an olive.

Santa Monica Blvd - November 16 - 1 mated female and 1 male found in a panel/pherocon trap placed in an olive.

Previous Larval Location

Santa Monica Blvd - November 14 - one second instar larvae found in olive.

Santa Monica Blvd - November 16 - five third instar larvae found in olive.

The trap density in the area of the finds was 80 McPhail traps per square mile.

CDFA inspectors Luis Cordova, Ruben Perez, Maria Ramirez, Ernesto Ronquillo, Alicia Ruiz, Antonio Urquieta, and Mary Winters are credited with finding the olive fruit flies.

Olive fruit fly does not respond to cuelure or methyl eugenol. CDFA will 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.

Since October 19, 1998, twenty-six olive fruit flies have been trapped at five sites in Westwood. Larvae have been found on two 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

2

 Totals

26
 

2

 

Prepared by: John Pozzi

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