Spider Mites

Tetranychidae

• Adult: minute, whitish, greenish or reddish, often with a pair of spots on body, eight-legged, up to 1/50 in. long.
• Egg: spherical, shiny, straw-colored, attached to the underside of leaves, usually to the web which the adults spin.
• Small Nymph: yellowish or pale in color, six-legged.
• Large Nymph: like adults but slightly smaller.
• Larva: elongate, tapering posteriorly, generally dark with bright markings, and may be covered with spines.
• Generation Time: 5-19 days.
• Damage: lightly infested leaves have light-colored stippling, while heavily infested leaves often have reddish-brown necrotic blotches.

Spider Mite Pictures

Image #23.
Spider mites-

a) may become abundant covering plant parts, especially lower leaf surfaces, with silk;

b) adult and egg of a common spider mite species. All lifestages occur primarily on lower leaf surfaces.

Image #24.
Spider mites-
nymphs and adults cause stippling of upper surfaces of leaves by feeding with piercing-sucking mouthparts on lower surfaces of leaves.

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• Introduction 
  (Please Read First)
• General Scouting Info.
• Identification Keys
• Bio-capsules
• Seasonality Charts
• Appendices