The goat-moth (Cossus ligniperda) is a large British moth. The larvae are about 7 cm long and hollow out galleries in trees and form cocoons from the sawdust in which the chrysalids are formed. The larval condition lasts for three years. The fully-developed insect is ash-coloured, with numerous small black lines on the first pair of wings. Research Goat-moth
 
The Probert Encyclopaedia was designed, edited and programed by
Matt and Leela Probert