Almond IPM Plan: Pests Monitored with the Dormant Spur Sample

Pests Monitored with the Dormant Spur Sample

Each name links to more information on identification and management.

Click on photos to enlarge

Black caps of San Jose scale, Diaspidiotus perniciosus.

San Jose scale nymphs
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.

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.

European fruit lecanium
Identification tip: Look for legless, immobile, yellow insects on twigs. Older nymphs may have brown markings and a distinct center ridge.

European fruit lecanium motile nymph and older nymphs, one parasitized.

Parasitized European fruit lecanium scale
Identification tip: Parasitized lecanium scales, such as the center one above, turn black.

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