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

January 15, 1999

PD06-99

Olive Fruit Fly (OLFF)

Los Angeles County

Eight OLFF were detected between January 13 and 14, 1999, in Los Angeles County. All of the finds are within the OLFF treatment area.

Cheviot Hills

Previous Trap Location

Wigtown Road - January 13 - one sexually mature male OLFF found in a McPhail trap placed in an olive tree.

Culver City

New Trap Location

Ranch Road - January 13 - one unmated female OLFF found in a CHAMP trap placed in an olive tree.

Palms

New Trap Location

Jasmine Avenue - January 13 - one sexually mature male OLFF found in a McPhail trap placed in an olive tree.

West Los Angeles / Westwood

New Trap Location

La Grange Avenue - January 13 - one sexually immmature male OLFF found in a CHAMP trap placed in an olive tree.

East Temple Way - January 13 - one unmated female found in a CHAMP trap placed in an olive tree.

Previous Trap Location

Holman Avenue - January 13 - one sexually mature male found in a CHAMP trap placed in an olive tree.

Santa Monica Blvd. - January 14 - One third instar larva and one teneral male found in olive.

CDFA trappers Enrique Enciso, Rigoberto Gomez, Chris Harris, Robert Nunez, Maria Ramirez, Jesse Razo, and Antonio Urquieta are credited with finding the OLFF.

CDFA Insect Biosystematist Kevin Hoffman made the determinations.

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, AM panel/CHAMP traps have been deployed at the same density as the McPhail traps within the delimitation trapping area. CDFA is continuing a larval survey on find properties and their adjacents.

Since October 19, 1998, a total of 248 olive fruit flies have been trapped in California. Two hundred forty-one OLFF have been trapped in the Westwood area of Los Angeles and larvae have been found on nine properties. In response, CDFA has initiated ground malathion bait to all olive trees within 200 meters of these finds. Also, five OLFF have been trapped at separate sites in Alta Dena, Inglewood, Manhattan Beach, Redondo Beach and West Hollywood areas of Los Angeles. CDFA has increased trapping according to protocol around these finds.

In addition to Los Angeles County, two OLFF has been trapped in Garden Grove and Rossmoor, Orange County and CDFA has increased trapping according to protocol around this find.

SUMMARY - 1998-1999 OLIVE FRUIT FLY FINDS
County	Adults Trapped	Date Last Adult Trapped	Larval Properties
Los Angeles	246	01/14/1999	9
Orange	2	12/24/1998	0
Totals	248		9

Prepared by: John Pozzi