A SUPPOSED NEW APPLE MITE. I I 



A SUPPOSED NEW APPLE MITE. 



-Eriophyes, sp. 



Early in the year Mr. H. Dunkin, of Warwick, had some 

 Apple shoots brought to him from Knowle, Warwickshire, in- 

 fested with a species of mite belonging to the genus Eriophyes. 

 Unfortunately, for my purpose, the tree was burnt before Mr. 

 Dunkin could obtain further diseased shoots, so at present the 

 species remains a matter of doubt. 



The mites seem to attack the buds only, the whole of the 

 tissues between them being normal. The buds are more or less 

 swollen, though occasionally shrunken, and the developing 

 leaves small, dead, and undeveloped, in consequence of which, 

 no growth takes place. Mr. Dunkin states that the upper buds 

 in a shoot are the first to be attacked. 



In addition to the mites, in some buds there were a number 

 of Eelworms, which a contributor to the pages of the Journal of 

 Horticulture has referred to the genus Aphelenchus. 



It seems clear from the nature of the injury that this is not 

 the work of Eriophyes mail (Nalepa), but until more specimens are 

 obtained nothing further can be said about it. 



THE PEAR-LEAF BLISTER MITE. 



Eriophyes piri (Pagenst.), Nalepa. 



A number of inquiries have reached me during the year con- 

 cerning the galled patches formed by this mite on the leaves 

 of the Pear. 



So far as my observations go this mite does very little serious 

 damage. Unlike many species of this genus, it spreads very 

 slowly, often a single tree remaining attacked for years without 

 it spreading to others. It is not at all uncommon to find the 

 leaves of one side of a tree or even one or two branches infected 

 while the rest of the tree is free. 



At the end of June, or early in July, the galled leaves should 

 be hand-picked and burnt, or, if badly attacked the branches 

 should be cut off and burnt. During April and May the trees 

 should be sprayed with the spray fluid mentioned on page 7. 



THE HAZEL BUD MITE. 



Eriophyes avellaena (Nalepa). 



A correspondent forwarded in April twigs of Hazel from 

 Earlswood, Solihull, and Henley, infected with this mite, in- 

 quiring the cause of the distorted buds and if any remedial mea- 

 sures were known. 



E. avellaena behaves in a very similar manner to E. ribis, 

 the Black Currant Gall-Mite, although I have never found it, in 

 any of the Hazel buds which I have examined, anything like as 

 numerous as E. ribis in Black Currant buds. 



