Insects Injurious to the Apple. 



I o;^, 



llUFERKNCKS. 



(1) St.iiiilmi. H. T. -Xatiirul History of tlio Tiueina,' \ol, I., pp. '20.S-'214. 



I'l. v.. Via ;-! (l.s.-.r.i. 

 (2] TJinJiahl. ]•'. r. liupovt on Iv-cjiioiiiic /oology foi' the year ending 



April 1st, 1907, ]>. 28 (19071. 



THE APPLE LEAF-BLISTER MOTH. 



{Onii.r pi'l'nili'lhi. St;l,) 



Amongst several specimens (if apple lea.ves sent during the year 

 1907 damaged by mining iarvir, some were found to lie attacked 

 bv tile little Tineid known as Onii.r pel ioJiUa. The mine formed by 

 this species is a rough blotcli, like tliat nf the nut species (Fig. I'Ol), 



and is on the upper surface of the leaf. The larva found in tliesc 

 blisters is greyish-green to olive green iu colour, the third In tenth 

 segments luive six pale spots, four in a row in front and two beliind ; 

 from these arise short stiff hairs. In length, the larva_'. may reach 

 7'5 mm. They are found in dune and again m September. AVben 

 mature the lar\'a leaves the blister and spins the two sides of the 

 leaf together, which forms a nest over rV inch in length (Stanitou 

 (2) says an inch); within tliis the larva, which finally assumes an 

 orange-vellow hue, spins a dull yellowisli cocoon. 



The' moth first appears in ilay. Its wing expanse is from KJ 

 to 1-' mm. The front wings are deep lirownish-grey ; on tlie costa 

 are seven or eight white patches, and on the inner edge alsd are 

 some whitish markings ; tlie fringe has t\\-.i external thin black lines 

 from the costa to the anal angle, i'osterior wings grey witli long 



