344 



Insect Pests. 



Later the fruitlets crack and then decay. Many fall to the ground 

 with the maggots within them, but in certain years all the maggots 

 escape whilst the fruitlets still hold on to the trees. 



The distribution of this fly in Britain is wide. It has been reported 

 from Sussex, Surrey, Kent, Devonshire, Herefordshire, Worcester- 

 shire, Cambridgeshire, Huntingdonshire, Dorsetshire, Somersetshire, 

 Gloucestershire, Cumberland and Carnarvonshire by various corre- 

 spondents. Ormerod (6) records it from Xorfolk, Lancashire and 



[F. Edenden. 



Cardiganshire ; and Carpenter (20) from Ireland. On the Continent 

 it is widely distributed, and it also occurs in the United States 

 (5, 11, 15, 19), where it is thought to have been introduced from 

 France in 1877. 



All varieties of pears seem to be attacked, both the fine dessert 

 and the coarse perry pears suffer alike. The latter trees, which grow 

 to a great height in Worcestershire and Herefordshire, are attacked 

 all the way up, just as much as small bush trees. Mr. Kagg reports 

 from Eeigate that all varieties are attacked there, save an old- 



