Speckled green fruitworm

Speckled green fruitworm

Orthosia hibisci (Guenée)

Lepidoptera: Noctuidae


O. hibisci: The adult is grayish beige with two purplish gray spots on its wings and a hairy thorax (A). The eggs are laid on the upper surface of the leaves. The larva is yellowish green with numerous whitish flecks, and three longitudinal white stripes along the dorsum (B).

  • Damage

    Attacks all deciduous tree fruits. Larvae feed on young leaves (C) and dig tunnels in buds and young fruit (B), often leaving a symmetrical round hole; fruit drop when the core is injured, or otherwise remain on the tree and develop corky scars (D).

    Management

    Use of broad-spectrum or selective (e.g., Bacillus thuringiensis) insecticides, if necessary, before or after bloom.

    Crops Affected

    • Apples
    • Cherries
    • Peaches
    • Pears
    • Plums

Similar Species

  • Humped green fruitworm

    Insect

    Adult's forewings are gray and marked with light and dark areas for 2/3 of their length the outer 1/3 is a lighter gray.

    Larva is apple green, often with a milky overcast, and has a pronounced rear hump.
  • Widestriped green fruitworm

    Insect

    The adult has bluish or steel gray wings marked with inconspicuous mottled patches.

    Larva is light green, similar to the speckled green fruitworm, but white stripes and spots are more
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