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

December 1, 1998

PD106-98

Olive Fruit Fly (OLFF)

Los Angeles County

CDFA trapper Ernesto Ronquillo found two olive fruit flies on November 25 and 30,1998, in the West Los Angeles area.

West Los Angeles

New Trap Location

Mississippi Avenue - November 25 - one sexually mature male found in a McPhail trap placed in an olive tree.

Previous Trap Location

Pelham Avenue - November 30 - one unmated female found in a Pherocon AM panel trap placed in an olive tree.

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 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, thirty-two olive fruit flies have been trapped at eight sites in Westwood and Cheviot Hills areas of Los Angeles. Larvae have been found on eight properties. CDFA began ground treatment on November 16th with malathion bait to all olive trees within 200 meters of the finds.

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	32	11/20/1998	8
Totals	32		8

Prepared by: John Pozzi