• Cigar casebearer

  Adult is dark gray with fringed wings. The small yellowish larva of the cigar casebearer has a black head and builds and hides in a cigar-shaped shelter that it carries with it while feeding or attaches to leaves and branches of apple trees.

• Bitter rot

  Bitter rot appears on young fruit as small, circular brown lesions. Lesions expand rapidly and radially under wet and warm conditions. As they age, they turn darker brown and become sunken.

• Apple anthracnose

  Branch lesions first appear as small, circular spots that are purple or red when wet. As lesions enlarge, they become elliptical, sunken and turn orange to brown. A distinct margin develops between healthy and diseased tissue, which eventually causes the bark to crack around the infected area.

• Green June beetle

  The adult is velvet green dorsally with yellow-orange margins on the elytra. Ventrally it is a shiny metallic green mixed with orangish yellow. The larva is a large, C-shaped grub that lives in the soil and is not found in the trees.

• Apple maggot

  Adults are black flies with three or four white cross bands on the abdomen, a prominent white spot at the posterior end of the thorax, and the wings are marked with black bands in the shape of an "F".

• Red velvet mites

  Balaustium is a large, bright red mite with a tick-like shape and a dense velvet-like covering of dorsal setae.

• San Jose scale

  Adult males are minute, winged insects about 1 mm long and golden brown with a reddish tinge. Scales may be either disk-shaped or oval, and are composed of concentric rings of gray-brown wax radiating from a tiny white knob.

• Mineola moth (Destructive pruneworm)

  Adult is a bluish gray moth that assumes a wedge shape when at rest. It has a transverse broad white stripe bordered by a smaller reddish brown stripe in the middle of the forewings a smaller set of similar bands occur near the posterior edge.

• Quince rust

  Attacks only the fruit of apple and pear. Symptoms begin as a purplish lesion, usually appearing on the calyx end of the fruit. As the disease progresses, the entire calyx end becomes blistered and deformed. Tube-like structures eventually form and produce powdery, bright orange spores.

• Apple leaf (curling) midge

  The adult is a tiny dark brown fly, and the larva is a yellow-white maggot with a reddish tinge.

• Pale apple leafroller

  The adult is elongated and dull gray. The larva is creamy white with an amber head, which turns black in the penultimate instar.

• Redbanded leafroller

  The adult's forewings are grayish brown with a subtle dark red and brown oblique band. The larva is pale green with a yellow or green head.

• Redhumped caterpillar

  The adult is a grayish brown moth. The larva is yellow with a red head and is lined longitudinally with orangish, black, and white stripes.

• Click beetles

  The click beetle is dark-colored its body is hard and elongated it has a characteristic pair of spurs and sometimes colorful markings on its thorax.

• Obliquebanded leafroller

  Adult wings are beige, tinged with red. Forewings are crossed with oblique brown bands. The female is larger than the male. The green eggs are laid in masses on the upper surface of leaves.

• Hawthorn dark bug

  The young adult is black with red wing markings, which disappear a few days after it metamorphoses into an adult.

• Crown gall

  Infected trees are often stunted and produce small, chlorotic leaves. Spherical to elongated swellings along the roots or on the trunk just above the soil line is the primary symptom.

• Black cherry aphid

  Adults and nymphs are shiny black soft-bodied insects; adults may or may not have wings. Nymphs are smaller, but generally similar in appearance to the adults.

• Dry eye rot (blossom end rot)

  Symptoms begin at the calyx end of the fruit, causing a reddish discoloration at the site of infection. The rot is at first soft, but eventually dries out, turning tan to brown with a red border.

• Cherry fruit flies

  The adult cherry fruit fly is somewhat smaller than the house fly, with a yellowish brown head and legs, and white crossbands on the abdomen. The black cherry fruit fly is slightly larger and its abdomen is entirely black.