Egyptian Boll Worm – Earias insulana

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Description

Adult

Wingspan of 20-25 mm. Forewings yellow-green and sometimes brown with diagonal green stripe. Hindwings dull white with brown subterminal line.

Larvae

Length of final instar reaches 13-18 mm. Body initially grey and later blue-grey with yellow spots. Small tubercules on dorsum bear short hairs. Head dark and shiny.

Eggs

Spherical, bluish-green, 0.5 mm in diameter. Typically laid on young bolls, shoot tips and buds.

Distribution

Europe, Africa, the Middle East, southern Asia.

Economic Host(s)

Cotton (Gossypium), rice (Oryza), sugarcane (Saccharum) and maize (Zea)

Symptoms/Signs

Larvae bore into terminal buds to feed on soft growing stages. Extensive tunnelling results in wilting of the top leaves and collapse of the top of main stems. Stem apexes turn black and die. Buds and flowers wither and drop. Conspicuous holes are present where the larvae entered.

Generations:

Up to 6

Trap

Please visit our Unitrap page for more information.

Lure

Please visit our Small Polymeric Vial page for more information.