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

July 28, 1998

PD34-98

Mediterranean Fruit Fly (Medfly)

Orange County

Lake Forest

While inspecting a Jackson/trimedlure trap on July 27, 1998, CDFA trapper Jose Casas found one female Mediterranean fruit fly. The trap was placed in a peach tree along Landisview Avenue. The find is approximately five miles outside the Sterile Medfly Preventative Release area for the Los Angeles Basin.

The trap density at the time of the find was 10 Jackson/trimedlure and 5 McPhail traps per square mile.

In response, CDFA will increase the trap density to 100 Jackson/trimedlure traps and 25 McPhail traps per square mile in the core square mile area around the find. The Jackson/trimedlure trap density in the first buffer of eight square miles will be 50 traps per square mile, with a 25-20-10 array ouside the first buffer.

CDFA Insect Biosystematist Kevin Hoffman determined that the female Medfly was unmated and sexually mature.

SUMMARY - 1998 MEDITERRANEAN FRUIT FLY FINDS
County	Adults Trapped	Date Last Adult Trapped	Larval Properties
Marin	1	07/14/1998	0
Orange	1	07/27/1998	0
Totals	2		0

Prepared by: John Pozzi