Names link to more information on identification and management.
Click on photos to enlarge
Mealy plum aphid egg
Identification tip: Eggs are black, oval, and laid on or adjacent
to buds. Waxy filaments (not visible here) may be seen with a hand
|No photo available
Leaf curl plum aphid
Identification tip: Closely resembles the mealy
plum aphid egg but is smoother and has no waxy filaments.
San Jose scale nymphs (healthy)
Identification tip: The four round, dark scales in the center
are the black cap stage, the most common overwintering form. The
earlier white cap stage is to left.
San Jose scale (parasitized)
Identification tip: Scales parasitized the previous season
will have a round hole in them where the adult parasite emerged.
European fruit lecanium nymphs
Identification tip: Look for legless, immobile yellow insects
on twigs. Older nymphs may have brown markings and a distinct center
European fruit lecanium
Identification tip: Parasitized lecanium scales,
such as the one in the center here, turn black.
European red mite eggs
Identification tip: Masses of eggs may be laid together. Each
slightly flattened red egg has a long, spinelike projection, called
a stipe, at the top that can be seen with a hand lens.
Brown mite eggs
Identification tip: Brown mite eggs (shown here with adults)
look like those of European red mite, but lack the stipe.