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

March 5, 1999

PD14-99

Olive Fruit Fly (OLFF)

Los Angeles County

Seven OLFF were trapped between March 1 and March 3, 1999, in Los Angeles County. Two of the finds are within the Los Angeles/Westwood OLFF treatment boundary. OLFF larvae was found at one new site in the Crenshaw district of Los Angeles and are near recent trap finds. Five OLFF have been found outside the treatment boundary in Crenshaw (3), View Park, and Brentwood.

Brentwood

New Trap Location

Oceano Dr - March 3 - one sexually mature male was found in a CHAMP trap placed in an olive tree.

Cheviot Hills

Previous Trap Location

Glenbarr Ave - March 1 - one sexually mature male was found in a CHAMP trap placed in an olive tree.

Crenshaw

Previous Trap Location

S. La Brea Ave - March 2 - two sexually mature males and one sexually mature, mated female were found in a CHAMP trap placed in an olive tree.

New Larval Location

Coliseum St - March 3 - three (3) third instar larvae found in an olive tree.

View Park

New Trap Location

Fairway Blvd - March 3 - one sexually mature, unmated female found in a CHAMP trap placed in an olive tree.

West Los Angeles

New Trap Location

Parnell Ave - March 1 - one sexually immature, unmated female found in a CHAMP trap placed in an olive tree.

CDFA trappers Ted Gonzalez, Juan Moreno, William Rodriguez, Marcus Samuels, and Lupe Segura 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 increased 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 306 olive fruit flies have been trapped in California. Two hundred and eighty- six (286) OLFF have been trapped in the Westwood area of Los Angeles and larvae have been found on 15 properties. In response, CDFA has initiated ground malathion bait to all olive trees within 200 meters of these finds. Also, eighteen (18) OLFF have been trapped at separate sites in Alta Dena, Bel Air Estates, Brentwood, Crenshaw (6), Hawthorne, Inglewood, Los Angeles(3), Manhattan Beach, Redondo Beach, View Park, and West Hollywood areas. 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 these finds.

SUMMARY - 1998-1999 OLIVE FRUIT FLY FINDS
County	Adults Trapped	Date Last Adult Trapped	Larval Properties
Los Angeles	304	03/03/99	15
Orange	2	12/24/1998	0
Totals	306		15

Prepared by: John Pozzi