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- Plant Health & Pest Prevention Services
- Pest Detection/Emergency Projects
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- DETECTION ADVISORY
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Mediterranean Fruit Fly (Medfly)
Riverside County
Lake Elsinore
One mated female Medfly was trapped on November 4, 1998, at
a new site. CDFA trapper Anna Marroquin found the fly in a CHAMP/yellow
panel trap placed in a lemon tree along Hague Street. The site
is within the Lake Elsinore Medfly eradication area and near
previous Medfly
finds (PD78-98;PD79-98;PD80-98;PD81-98;PD83-98).
Since October 22, 1998, sixty-eight (68) Medflies have been trapped
at 26 separate sites in the Lake Elsinore area. Larvae have been
found on four properties. CDFA initiated ground treatment with
malathion bait spray to find properties and adjacents. Ground
treatment of all properties within 200 meters of the finds began
on October 31. Soil drench treatments with diazinon are planned
for the larval properties.
The trap densities in the core square miles around the finds
is 100 CHAMP/yellow panel traps and 25 McPhail traps per square
mile. The trap density in the first buffer of eight square miles
is 50 CHAMP/yellow panel traps per square mile, with a 25-20-10
array of CHAMP/yellow panel traps outside the first buffer.
Sterile Medfly releases (SIT) is scheduled to begin November
6, 1998.
CDFA Insect Biosystematist Kevin Hoffman made the determinations.
|
SUMMARY - 1998 MEDITERRANEAN FRUIT FLY FINDS |
|
County |
Adults Trapped |
Date Last Adult Trapped |
Larval Properties |
|
Marin |
1 |
07/14/1998 |
0 |
|
Orange |
11 |
10/27/1998 |
1 |
|
Riverside |
68 |
11/04/1998 |
4 |
|
San Diego |
7 |
08/02/1998 |
0 |
|
Totals |
87 |
|
5 |
Prepared by: John Pozzi |