604 [ DISEASES OF THE VINE. 



latva proceeds to the crevices of the bark of the stem 

 and branches, wher \ it is transformed into a chrysalis and 

 hvbernate* throughout the winter to renew its activities 



O 



in the following spring. Another small moth, Polyckrosis 

 botrana, Schiff. sometimes referred to under the name 

 of Eudemis botrana or Gvapholitha botrana, Schiff. or 

 Albinia vochiina, Briosi., has three generations in the 

 year and causes injuries similar to those caused by Con- 

 chy Us. It is common all over Europe and North Africa, 

 but is not known to exist in these Islands. This moth is 

 smaller than Conchy tis, and is of a yellowish brown 

 colour, the anterior win<^s being grey, with a yellow base 

 having two or three black dots upon it ; and small 

 black dots are also present on the middle and apical 

 part of the wing. The posterior wings are dark grey. 

 The male moth is smaller than the female. The larva 

 is dull green, sometimes greyish or slightly bluish. 

 These moths have several natural enemies, which are 

 now bred artificially and distributed in those regions 

 where an invasion is threatened ; the more important 

 of these natural enemies being Phytomyptera unicolor, 

 Rond which attacks both the lar va and the chrysalis of 

 the moth. Arsenical spra> s, consisting of arseniate of 

 soda, of lead or of copper, and also solutions of tobacco 

 juice, and sprays containing pyretrum powder have given 

 good results against these moths. 



Other species of Lepidoptera, such as Tortrix Pil- 

 leriana. Schiff., Antispiia Riviltei, Stt., Ochneria dispar, 

 Hb., and Naenia typica, L. prey on the flowers or on 

 the foliage of the vine in France and Italy, while the 

 large lirva of Acherontia atropos, L. the death's head 

 moth, occasionally preys on the foliage of the vine in 

 our vineyards. Antispiia Rivillei, Stt. was first dis- 

 covered in these Islands by Gohen de Reviile in 1750. 



Coleoptera. In our vineyards, perhaps the worst 

 enemy of the vine is Lalidostomus taxicornis, Labill. 



