29 



The difficulties encountered show well in our Spiny White Ply 

 work. Numerous wealthy residents of Havana own farms in the coun- 

 try and occasionally have removed plants from Havana to the country. 



This is now prohibited, but at the same time we are obtaining a 

 list of these farms and are visiting them to look for the Spiny White 

 Fly. In one case only at Hoyo Colorado, some 20 miles from Havana, 

 .1 single farm has become infested in this way, but there is no citrus 

 grove there. 



THE BLACK FLY (ALEUROOANTHUS WOGLUMI) 

 IN CUBA. 



Letter from Wilnion Newell to J. B. Johnston, dated May 24, 1916. 



We have been considerably interested lately in learning as much 

 as possible regarding the Aleyrodid aleurocanthus wpglumi described 

 a few months ago by Prof. Quaintance of the Bureau of Entomology 

 in manuscript and which is known to occur in Jamaica and certain 

 islands of the Bahamas. 



A member 6f our staff. Dr. J. H. Montgomery, has just returned 

 from a trip of investigation to the Bahamas and has found that this 

 pest is very destructive there, particularly to lime trees. Prof. Quain- 

 tance quotes you as saying that the guava is one of the plants 

 subject to attack by this insect and from this information I infer that 

 this pest occurs in Cuba. 



Will you kindly write me whether or not you know this pest to 

 occur in Cuba and if possible, the extent of its distribution and the 

 extent of its ravages. 



The writer believes that close co-operation along the lines of 

 keeping informed regarding the various pests and diseases which are 

 likely to be injurious either in Florida or Cuba will be of the utmost 

 importance to all parties concerned. 



Letter from J. E, Johnston to Wilmon Newell, dated. May 31, 1916. 



Your letter of May 24 in regard to Aleiirocanthtis woglumi has 

 been received. 



In reply I would state that in August 1915 a few specimens of 

 this insect were received by our Entomologist who determined them 

 as Aleurocanthus woglumi by comparing them with material brought 

 over by me from Jamaica in the month of June of the same year. 

 The specimens were reported to occur on a few citrus trees in a yard 

 outside of Guantanamo, and were sent in not so much as something 

 serious as something new. 



This constitutes the first report of the insect in Cuba. The only 

 notes we had as to the importance and the distribution of the "black 

 fly" were in a written description given me by Mr. Ashby of Jamaica. 



