INSECTS, ETC. 



163 



turnip by night, and hide in the soil by day. They are 

 active in autumn and winter. The Diamond Black Moth 

 (Plutella cruciferarum) larvae, with greenish bodies and 

 yellow heads, do immense injury in some seasons to the 

 foliage of turnips. The larvae of the Garden Pebble Moth 

 (Pionae forficalis), yellowish-green, -devour the leaves of 

 cabbages and turnips in summer and autumn ; the creamy- 

 white and spiny larva? of the Ghost Moth (He])iahisbuniu"i) 

 feed on the roots of lettuce in autumn and winter; and 



[Photo: J. G. Ulakcy. 

 EGG -3 OF THE CABBAGE MOTH (MAME^TRA BRASSIC.E). 



The eggs, which are largely magnified, are laid on the under side of the leaf. 



the reddish-brown tuberculed Caterpillars feed on the 

 leaves of vegetables by night and hide in the soil by day. 

 Then there are the larvae of the Yellow Underwing Moth 

 (Triphaena pronuba), a greenish-brown Caterpillar striped 

 with rose, brown, and black, which feeds by night and 

 hides in the soil by day. This pest attacks the stems 

 of young cabbage-s, lettuces, etc., causing the plants to 

 wither and die. 



M 2 



