Insect Management Handbook

Brown marmorated stink bug (Halyomorpha halys)
Consperse stink bug (Euschistus conspersus)
Western boxelder bug (Boisea rubrolineata)
Western tarnished plant bug (Lygus hesperus) and other Lygus spp.

See also, in this Handbook:

Image related to Plum and prune-Lygus bug and stink bug

Aspila (Grapholita) prunivora

Pest description and crop damage This tortricid pest is closely related to and has characteristics similar to the Oriental fruit moth. The larvae feed inside the fruit, often entering through the calyx end.

European (filbert) leafroller (Archips rosana)
Fruittree leafroller (Archips argyrospila)
Obliquebanded leafroller (Choristoneura rosaceana)
Pandemis leafroller (Pandemis pyrusana)

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Includes

Rose leafhopper (Edwardsiana rosae)
White apple leafhopper (Zonocyba (Typhlocyba) pomaria)

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Pseudococcus maritimus

Spilonota ocellana

Pest description and crop damage Adults are greyish moths about 0.5 inch long with a thick white band across each forewing. Mature larvae are chocolate-brown with black heads, and less than 0.5 inch in length. The eyespotted bud moth is principally a pest in Oregon.

Image related to Plum and prune-Eyespotted bud moth

Primarily European earwig (Forficula dentata)

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Includes

Spotted cutworm (Xestia c-nigrum)
Variegated cutworm (Peridroma saucia)

Choreutis pariana

Image related to Plum and prune-Apple-and-thorn skeletonizer

Hop aphid (Phorodon humuli)
Leaf curl plum aphid (Brachycaudus helichrysi)

Thistle aphid (Brachycaudus cardui)

Image related to Plum and prune-Aphid