314 



had appeared previously in Hungary in 1901, Since then it had not 

 been seen again, except in 1905 in one place near Pest. This insect 

 comes from Russia where it has caused considerable havoc at different 

 times ever since 1769. It is also known in the United States, where 

 it was probably introduced from Russia. In America and also more 

 recently in Russia, it has shown a marked preference for sugar-beet. 

 The author was unable to ascertain whether this moth has Uved on 

 weeds Avithout attracting the notice of farmers during the fourteen 

 years since the last outbreak, or whether the present invasion was 

 derived from the swarms which occurred in Russia during 1909, 1912 

 and 1913. The life-history of the insect is described with the measures 

 of control adopted in Russia and in America. In Hungary only one 

 generation of P. sticticalis, namely the July one, has hitherto caused 

 damage. The following generation disappeared, leaving no trace, and 

 no serious attention was therefore given +o prevent a further spread 

 of the insect. Nevertheless the following means of control are 

 advised : Surrounding the infested fields with a ditch and destroying 

 the larvae along it ; spraying the unattacked portions of infested 

 crops with a 3 to 5 per cent, solution of barium chloride and ploughing 

 the soil deeply in the infested places, accompanied by a thorough 

 extermination of all weeds. 



RiVEROs (E.). Chilocoriis 4-pnstuhtus, a Natural Enemy of Aphis 

 persicae and perhaps also of Eriosoma lanigera, in Argentina. — 

 Jnternat. Rev. Sci. & Pract. Agric, Rome, vii, no. 1, January 

 1916, p. 172. [Abstract from La Enologia Argentina, Mendoza, 

 Year 1, no. 6, pp. 163-164, 1915.] [Received 2nd May 1916.] 



When visiting the Agricultural School of Saji Juan in February 1915, 

 the author noticed numerous examples of Chilocoriis i-pustulatus on 

 peach-trees which had been attacked by Aphis persicae, but on which 

 all traces of that Aphid had disappeared. Examples of the same 

 CoccineUid were also stated to have been seen on apple trees attacked 

 by Eriosoma lanigenmi. 



Sanzin (R.). The *' White Cochineal of the Vine " {Pseudococcus 

 vitis) in the Provinces of Mendoza and La Rioja (Argentina). — 

 Internal. Rev. Sci. & Pract. Agric, Rome, vii, no. 1, January 

 1916, p. 173. [Abstract from La Enologia Argentina, Mendoza, 

 Year 1, no. 6, pp. 164-165, 1915.] [Received 2nd May 1916.] 



The presence of Pseudococcus vitis has been noticed for some time 

 past at Mendoza, and this pest is menacing the cultivation of vines 

 recently started in that province. While this scale has two generations 

 in the year in Europe, in these regions, owing to the warm climate, 

 it may have three or more. The individuals of the last generation 

 hibernate under the bark of the stocks, hence the necessity of removing 

 the bark from the vines in autumn so as to destroy the largest possible 

 number of individuals. The plants are then treated with lime-sulphur 

 wash or petroleum emulsion. 



