442 



attacked by the larvae of Acrolepia assedella {Tinea aUiella), a small 

 moth that oviposits on the central leaves, the larvae mining down 

 to the heart of the plant and causing its death. Soot should be 

 sprinkled as a repellent on the young plants ; spraying with a 3 

 per cent, black soap solution is also recommended. Infested plants 

 should be cut below the gallery which the larva has constructed, 

 and the infested parts burned ; the plants should then be hoed and 

 manured in order to accelerate growth. 



The Aphids, Aphis jyyrastri and A. pyri, appeared in great numbers 

 on the leaves and the ends of young shoots of pears, causing considerable 

 damage. Pear trees have also been attacked by the larvae of Erio- 

 campoides limacitia {Tenthredo adumbrata), which are abundant in 

 September and October, living in the parenchyma of the leaves. 

 As the attacks occur when the fruit is half -grown, the damage 

 done is considerable. To destroy the larvae, the leaves should be 

 dusted with powdered fat lime. Eriophyes (Phytopfus) pyri punctures 

 the ]ea\ es, causing blisters. As winter approaches, these small Acarids 

 shelter between the bud-scales for hibernation and puncture the 

 rudimentary leaves where the eggs are later deposited. Infested 

 leaves should be collected and burned. As soon as signs of infestation 

 appear, repeated sulphur treatments are necessary. On apple trees, 

 Aphis ])omi {mali) and Eriosoma lanigerum were abundant. For 

 dealing with the latter, the residue of acetylene gas or calcium carbide 

 sludge is used. At the begiiming of winter a hole — with a radius 

 of about 3 ft. — should be dug to expose the roots, and a milk made 

 of this substance poured in, ih to 6 pints being sufficient for a good- 

 sized tree. This should kill both insects and eggs on the roots. The 

 branches and trunks should be whitewashed with the same solution, 

 care being taken to penetrate all crevices. As soon as the solution 

 is absorbed, the hole should be filled in again. 



DE ViLMORiN (P. L.). Note sur les D6gats causes par la Tordeuse des 

 Bourgeons du Pin {Evetria buoliana, Schifl.) dans les Collections 

 de Verrieres. [Note on the Damage caused by the Pine-shoot 

 Moth in the Plantations at Verrieres.] — Bull. Soc. Path. Veg. 

 France, [sine loco], iv, no. 2, 1917, p. 83, (Extract in Jl. Soc. 

 Nat. Hortic. France, Paris, xix, June 1918, pp. 90-91). [Received 

 13th August 1918.] 



Pine plantations at Verrieres, and particularly the younger trees, 

 liave during recent years sufTered considerably from the attacks of 

 Rhyacioniu {Evetria) buoliana, Schiff. (pine-shoot moth), which destroys 

 "the shoots and greatly deforms the trees. Pinus panderosa, P. sabiniana, 

 P. taeda, P. contorta and P. muricata are the chief species attacked. The 

 larvae construct a gallery within the shoot, where pupation occurs in 

 the first half of June, the moths appearing in the latter half of June 

 and early. July. The only successful control measure seems to be 

 the collection and destruction of infested shoots containing larvae 

 or pupae. Several species of Ichneumonids are parasitic upon 

 R. buolixina, and it is suggested that infested shoots should be placed 

 in vessels that would prevent the escape of the moths while releasing 

 the parasites. 



