Insect Management Handbook

Bucculatrix albertiella

Includes

Andricus californicus

Bassettia ligni

Besbicus mirabilis

Neuroterus saltatorius

Merodon equestris

Eriophyes pyri

Pest description and crop damage The leaf blister mite is a very tiny, white, sausage-shape eriophyid mite. They are seldom visible to the unaided eye. Eriophyid mite feeding on the underside of mountain ash leaves causes development of blisters on the upper leaf surface. These raised spots are generally light green, round, and look somewhat wrinkled. Older leaf blisters may turn brown. Severe infestations may result in premature leaf drop.

Several species

See:

Common Pests of Nursery Crops

Frankliniella occidentalis

Pest description and crop damage Adults are yellow to yellow-brown, 0.05 inch long, narrow, with wings. Larvae are smaller and wingless. Both stages feed on developing growth causing leaf distortion and black necrotic tissue. Most damage occurs when thrips disperse as nearby grass fields are harvested in the summer.

Management-chemical control

See:

Proteoteras aesculana

Vasates quadripedes

Pulvinaria innumerabilis

See:

Common Pests of Nursery Crops

Includes Norway maple aphid (Periphyllus lyropictus)

See:

Common Pests of Nursery Crops

Pest description and crop damage These aphids are black, soft-body insects on leaves; sticky secretions on leaves and under trees.

Management-chemical control

See: