Goat Moth – Cossus cossus

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Description

Adult

Wingspan of 68 – 96 mm. Forewings grey-brown with indistinct grey-white pattern of numerous wavy lines. Hind wings grey-brown with few markings. Thorax velvety brown-grey with black transversal stripe.

Larvae

Initially pink after eclosing and becoming red brown by the last instar. Dorsum darker and head black. Length of 80-120 mm.

Eggs

Pale brown and oblong, 1.2-1.7mm long. Laid in clusters in bark crevices.

Distribution

Europe, the Middle East and most parts of Asia.

Economic Host(s)

A wide variety of tree species including apple ( Malus ), pear ( Pyrus ), olive ( Oleae ), sweet chestnut ( Castanea ) and oak ( Quercus ).

Symptoms/Signs

Larvae bore in all directions within the sap and heartwood of tree trunks and branches interfering with sap circulation and can result in tree death. Frass and an unusual goat like odour are signs of infestation as is exuding resin from entrance/exit holes.

Generations:

<1 (larval development can take up to 5 years)

Trap

Please visit our Mini Delta Trap and Vane Trap pages for more information.

Lure

Please visit our Rubber Septum and Small Wax Plug pages for more information