THE PINE SHOOT TORTRIX. 27 



THE PINE BUD TORTRIX. 



Retinia turionana, Hubn. 



Two cases of damage to Scotch Pines by the larvae of this moth 

 have been reported on. 



LIFE-HISTORY. 



The female deposits her eggs towards the end of May or early in 

 June. A single egg is laid on the middle bud of the whorls. The 

 larva hatches out in about ten days, and at once bores its way into the 

 centre of the bud, destroying the same. Occasionally the lateral buds 

 also are attacked. 



Pupation takes place about the middle of May in the following 

 year, and the moth emerges at the end of May or early in June. 



The same measures as recommended for the Pine Shoot Tortrix 

 should be carried out wherever possible. 



THE PINE SHOOT TORTRIX. 



Retinia b 210 liana, W. V. 



Various correspondents in Staffordshire and Leicestershire have 

 forwarded the larvae of this small moth, together with the injured 

 shoots of Scotch Pine. 



LIFE-HISTORY. 



The moths appear towards the end of June or early in July. The 

 female deposits her eggs among the terminal buds, and the caterpillars 

 hatch out late in August or early in September. In the latter month 

 they hibernate in the buds, and pupate the following May at the bases 

 of the injured shoots. Infested trees are easily identified by the dis- 

 torted shoots, the injured one's turning downwards, whilst those which 

 have been destroyed usually die, leaving stumpy growths, due to the 

 unnatural development of other buds. The pupal stage occupies about 

 twenty-eight days. 



PREVENTIVE AND REMEDIAL MEASURES. 



The only measure of any value, and it is not always possible to 

 carry out, is to remove all injured shoots, and burn the same. 



EXPLANATION OF PLATE VI. 



Pine branch, showing distortion after antecedent injury by the larva of 

 the Pine Shoot Tortrix. 



d. A larval gallery exposed, Nat, size. 



