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

 PD16-98

Oriental Fruit Fly (OFF)

Contra Costa County

Concord

One adult male OFF was found on July 16 in a Jackson/methyl eugenol trap by Contra Costa County Pest Detection Specialist Vivian Cervantes. The trap was placed in a loquat tree along Forestview Avenue.

The Jackson/methyl eugenol trap density in the area was two traps per square mile. In response, Contra Costa County Department of Agriculture will increase the Jackson/methyl eugenol and McPhail trap densities to 25 traps per square mile in the core square mile. The Jackson/methyl eugenol trap density in the remaining 80 square mile area will be raised to five traps per square mile.

CDFA Insect Biosystematist Kevin Hoffman made the determination.

SUMMARY - 1998 ORIENTAL FRUIT FLY FINDS

County

 Adults Trapped

 Date Last Adult Trapped

 Larval Properties

 Contra Costa

 1

 07/16/1998

 0

 Los Angeles

 1

 07/06/1998

 0

Orange

2

07/08/1998

 0

 Totals

4
 

 0

 

Prepared by: John Pozzi

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