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Plum
> Year-Round IPM Program > Bloom to Postbloom
> San Jose Scale and Natural Enemies
Plum
San Jose Scale and Natural Enemies
Names link to more information on identification and management.
Click on photos to enlarge
San Jose scale (male)
Identification tip: Adult male San Jose scale have
well developed legs, a single pair of wings, long antennae,
and a thin brown band across the thorax. This male is caught
in a pheromone trap. |
San Jose scale (mature female)
Identification tip: Mature female San Jose scale is covered by a grayish,
flattened, circular shell, about 1/12 in diameter, with a distinct nipple (center).
The immature male (above female) is elongate. |
San Jose scale crawlers
Identification tip: San Jose scale crawlers are bright
yellow and tiny (about the size of the sharp end of a pin),
with well developed eyes, antennae, and legs |
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Aphytis aonidiae
Identification tip: Adult Aphytis aonidiae,
parasite of San Jose scale, is a tiny yellow wasp with short
antennae and fringed wings, shown here laying an egg in a
scale. |
Encarsia perniciosi
Identification tip: Scale parasite, Encarsia perniciosi,
caught in pheromone trap used to monitor flights of male
San Jose scale. It is a tiny dark wasp with short stubby
antennae. |
San Jose scale, parasitized
Identification tip: The exit hole in the covering of the scale (left)
indicates that a parasite has emerged. |
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