80 GREEN PUG. 



and there is a slight discoidal spot, not marked 

 in the figure. As is the case with most of the 

 Pug Moths, the caterpillars of both these species 

 burrow into the ground after they are full fed, 

 and make for themselves an earthen cocoon. 



Some of these Pug Moths are extremely in- 

 jurious to gardens and orchards. One of these 

 insects, the GREEN PUG (Eupithecia rectangulata), 

 is very plentiful in this country, the caterpillar 

 infesting the apple and pear, among which trees 

 it sometimes works great mischief, attacking the 

 blossoms and buds, and so destroying the future 

 fruit. The caterpillar is very small, and when it 

 has entered an opening bud it draws the edges 

 of the petals together, so that it is completely 

 sheltered, and then proceeds to cut away the very 

 heart of the flower, finishing by devouring tho 

 young fruit itself. 



The caterpillar even remains in the flower 

 when it has finished feeding, and further pro- 

 tects itself by spinning a silken cocoon, in which 

 it remains until it changes into the perfect con- 

 dition. The double protection afforded by the 

 shelter of the dried petals and the silken cocoon 

 is needed because this flower, together with the 

 injured fruit, is blown from the tree and falls to 

 the ground. 



