1909.] Insect, Fungus, and other Pests. 



389 



Surrey, was also on a beech hedge. Several reports of the 

 prevalence of larch aphides were received, and this pest will 

 be dealt with in a subsequent number of the Journal. 



As might be expected, several cases of Sawfly attack have 

 been brought to the notice of the Board. In June plums 

 infested with the larvae of the Plum Sawfly (Hoplocampa 

 fulvicornis, Klug.), were sent from places in Huntingdon- 

 shire. The infested fruit had fallen by the 18th June. About 

 the same time a correspondent from Worcester sent some 

 larvae of this pest gathered under his plum trees in that town. 

 In a letter sent with the specimens he said, "The grubs are 

 causing plums to fall off to an alarming extent in my plum 

 plantation of 400 trees. I should think that quite half of the 

 plums on some of the trees have fallen, most notable being the 

 Early Prolifics." On 28th June a number of spoilt plums, 

 taken from a Victoria plum, some of them containing the 

 larva, were received from Sinnington, York. Concerning 

 these the writer said, "The tree, a standard, is bearing a good 

 crop; quite one half of the plums were affected. The pest 

 has not been previously seen in this district." There is no 

 doubt, however, that this pest has been present in many 

 parts of England for a long time, and has repeatedly caused 

 great damage. An article on the life history of the Sawfly is 

 given on page 385. Apples hollowed out by the Apple 

 Sawfly (Hoplocampa testudinea) have been sent from Stock- 

 port and Wisbech. This pest is very common (see Leaflet 

 No. 205). The Raspberry Beetle (By turns tomentosus) was 

 reported from Blackheath. 



A bad attack of White Root Rot (Rosellinia necatrix), 

 which, it will be remembered, is scheduled under the Destruc- 

 tive Insects and Pests Order of 1908, was reported to the 

 Board in the spring from a nursery in Middlesex. The 

 trees affected were cherries, and had been in the ground two 

 years, having been budded last summer. About eight rods of 

 stocks were planted, and about 30 per cent, of these were 

 attacked, but not systematically so. The trees that showed 

 disease were distributed throughout the plantation in an ap- 

 parently haphazard fashion. Those that were affected were 

 burnt, and it was suggested that sulphur should be hoed in 

 between the remaining trees and all weeds burnt. The stocks 

 were brought from France, but the disease appears to have 



