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  Spiders: Foliage web-builders

  Beneficial

  The body of a spider is divided into two regions, the cephalothorax and abdomen. The cephalothorax bears the eyes (various numbers and arrangements), mouthparts, pedipalps and legs (four pairs), and the unsegmented abdomen bears the genital structures, spiracles, anus and spinnerets (silk-spinning structures).

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  Stigmaeid/"Yellow" mites

  Beneficial, Insect

  Agistemus fleschneri is the principal species found in QC and northern ON orchards, while Zetzellia mali predominates in the US, southern ON and the maritime provinces.

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  Stink bugs

  Beneficial

  The adult has an oval shield-shaped body, grayish or brownish in color; a spur is present on each side of its thorax. Eggs, grouped in masses of 20 to 30, are in the shape of small barrels. They are gray, cream or gold-colored, decorated by a ring of small hairs.

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  Syrphid fly

  Beneficial

  Syrphid fly adults resemble bees but have only one pair of wings and much shorter antennae. They can be seen hovering in the air near plants. Their larvae are predators. Syrphid fly larvae are usually light green, legless maggots, rounded at the rear and tapering to a point at the head. When the maggot is crawling, the head moves from side to side.

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  Tachinid flies

  Beneficial

  The adults are similar to a housefly but are covered with stiff hairs. The larvae have the appearance of small maggots and feed inside caterpillars and other hosts.

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  Tachinid fly

  Beneficial

  Tachinid fly adults are hairy and bristly. Their larvae feed on the larvae of some pests.

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  Trichogramma wasps

  Beneficial

  Trichogramma wasps are egg parasites of many insects, including grape berry moth and leafrollers. Parasitized eggs are dark black rather than the yellow-cream of healthy eggs.