70 



light, dirty green colour, with white sides. The larvae are adult in a 

 month, when they fall to the ground, then they make their way into 

 the soil and form cocoons, within which they remain for another ten 

 days. Then they pupate, and in a few days a second brood appears. 



From these latter a third brood may appear, and the larvae of the 

 last brood remain within their silken cocoons until the following May. 



Insecticides. Spray when the larvae are seen with 4 Ib. of lead 

 arseniate to 100 gall, of water. 



Spread tarred paper beneath the trees, and shake them, and burn 

 all the insects that fall on to the paper, they being the larvae. 



5. THE PLUM SAWFLY, Hoplocampa fulvicornis. 

 ORDER HYMENOPTERA. 



The pest attacks all varieties of plums. 



The fly appears in April or May, when the female punctures the 

 blossom, and deposits in it a single egg. 



This hatches in about a fortnight, and the young larva at once 

 commences to make its way into the developing fruit. After feeding 

 for a time on one fruit, the larva passes to another. The inside of the 

 fruitlets becomes quite destroyed, but in the larger fruit only a space 

 is eaten round the kernel. The larvae are full fed in early July, when 

 they leave the fruit and form in the soil brownish oval cocoons, in 

 which they remain until the following February, when they pupate. 

 There is only a single brood in a year. 



Pick and burn all infested fruit. 



On a large area, treat the soil beneath the trees with ground 

 unslaked lime, and then turn the soil over. 



These are the more important pests attacking the plum tree, others 

 being : 



1. Gold Tail Moth, Porthesia similis . . Order Lepidoptera 



2. Common Vapourer Moth, Orgyia antiqiia . ,, 



3. Lappet Moth, Lasiocampa quercifolia 



4. Scalloped Hazel Moth, Odontopera bidentata ,, 



5. Mottled Umber Moth, Hybernia defoliaria . 



6. March Moth, Anisopteryx, aescularia . 



7. Figure of Eight Moth, Diloba coemleocephala ,, ,, 



8. Dot Moth, Mamestra persicariae . . ,, ,, 



9. Cherry-tree Stem Borer, Semasia woeberiana ,, ,, 



10. Brown Soft Scale, Lecanium capraea . . ,, Rhynchota 



11. Brown Currant Scale, Lecanium persicae . ,, ,, 



12. Oyster-shell Bark Louse, Aspidiotus ostreae- 



formis 



13. Pear Thrips, Euthrips pyri . . . ,, Thysanoptera 

 All these can be remedied by spraying with 4-6 Ib. of lead arseniate 



to 100 gall, of water, and by shaking the trees over tarred paper for the 

 beetles. 



