194 Insect Pests. 



Wiog expanse in both h inch. 



The larva of A. conjugella is described by Stainton (3) as being dull 

 whitish-yellow ; the head and second segment pale brown. Lampa (2) 

 figures it pinkish and with additional dark areas on the anal 

 segment. A. cfhii^iiclla feeds in its larval state on shoots of the 

 cherry, according to Stainton, and is found there in May. Taschen- 

 berg(5) refers to it in Germany as occurring in May in the leaf-buds 

 of the hazel, in the leaf and blossom l)uds of the wild plum, the 

 cultivated plum and cherry, in united leaves of Cratccgux tcrminalis ; 

 also records it on the apple trees as becoming injurious. 



It is possible that this is the species referred to by Whitehead. 



The second species, A. conjugella, feeds in its larval stage in the 

 apple, and has been I'ound in this country in the berries of the roan 

 tree or mountain ash. 



Its work in the apple is very marked, small tunnels being made 

 in the pulp of the fruit in all directions. 



Warburton (6) described the attack of a new apple pest in Devon- 

 shire which he said was due to a caterpillar, " which when bred out 

 will doubtless prove to be an Argyresthia," but it does not answer 

 to the description of the larva of A. conjugella. The apples become 

 riddled with fine winding burrow^s, and Warburton pointed out that 

 when the caterpillars were present it was by no means easy to 

 extract one unhurt, for the complicated windings of the burrows 

 have to be followed with the greatest care. Now and again the 

 borings take a complete loop and the larva enters the fruit again at 

 another point. In bad cases the core had always lieen reached and 

 one or more of the pips excavated. 



The w-orking is just as is described on the Continent, l)ut the 

 difierence of the caterpillar is apparent. 



The treatment for these fruit pests is little understood ; probably 

 spraying with arsenate of lead will be found successful. 



Referenoks. 



(1) Whitehead, Sir C. Jomnal Board of Aoricnlture, vol. II., No. 2, p. 153 



(1896). 



(2) Lamjja, Seen. ' Uppsatser Praktisk Entomologi,' 16 pp., 1-16 and Taf. 1. 



Upsala (1906). 



(3) Stainton, H. T. 'A Manual of British Butterflies and Moths,' vol. II., 



p. 369 (1859). 



(4) Whitehead, Sir C. Journal Board of Agriculture, vol. Y., No. 1, p. 59 



(1898). 



(5) Taschenberg, E. L. ' Praktische Insekten-kunde,' III., p. 297 (1880). 



(6) Warburton, Cecil. Annual Report of the Zoologist for 189H. .Journal 



Royal Agricultural Society, p. 760 (1899). 



