62 



GOOSEBERRY. 



Gooseberry and Ivy Red Spider. Ih-i/nliia prfrtioaa, C. L. Koch. 



^m /^/' 



Bryobia pe.btiosa, from life ; B. speciosa (outline figure after Koch) ; both mag- 

 nified. Leaf infested by "Ked Spider," nat. size. 



The Gooseberry Ked Spider was one of the infestations of 1893, of 

 which the prevalence was in marked coincidence with the heat and 

 drought which occurred in Enghind from the beginning of March to 

 the end of June, and very especially from the beginning of March 

 until the middle of IMay in that year. The first dates of appearance 

 reported were March 15th and 17th. 



In the past season, that of 1894, this "Ked Spider" attack 

 reappeared like some others to an unusual amount, as relics of the 

 unusual prevalence in the previous year supplying an unusual amount 

 of survivors through the winter, and (like them) after raising some 

 anxiety lest a second visitation was at hand, quietly dropping down 

 into average amount of presence. 



In 1894, the first note of observation of Ked Spider on Gooseberry- 

 bushes was sent me by Mr. J. Hiam, from Astwood Bank, near Red- 

 ditch, on Feb. 24th, with the mention that he had already found a 

 considerable quantity hatched out, the first having been found on 

 Feb. 4th. 



On the 2nd of March Mr. Francis Nixon, of Great Eversden, near 

 Cambridge, to whom I was indebted in the previous season for careful 

 and useful observations of this Gooseberry pest, wrote me as follows ; 



