264: 



FOREST ENTOMOLOGY. 



about the end of May and beginning of June. This is due to the 

 voracious feeding larvae of Penfhina pruniana. The larvae commence 

 feeding just as the foliage develops, so that the infested patch re- 

 mains naked until the larvse pass into the pupal stage about the 

 middle of June. 



The moth may be looked for about the beginning of July lodging 

 amongst the foliage, and with a little patience may be easily boxed 

 during the daytime. 



The moth has fore wings blackish for two-thirds of their length, a 



Fig. 250. Foliage of hazel injured by larva? o/Tortrix ribeana. 



space before middle of wing white, between basal patch and central 

 fascia, sometimes crossing the wing, but always distinct on inner 

 margin ; apical third white, clouded with grey, with about four small 

 tooth-marks on costa ; hind margin dark-grey. Expanse 18 to 20 mm. 

 All the species of this genus have similar markings, and are not easy 

 to determine ; but the short broad form of the wings will separate it 

 from its allies. 



