THE ORCHID REVIEW. 241 
THE ‘CATTLEYA FLY. 
SomE of our readers have had practical experience with the troublesome 
pest which we here illustrate from a photomicrograph, and those who now 
make its acquaintance for the first time may consider themselves fortunate, 
as the following communication will prove :— , 
-“ Last fall I received some plants of Cattleya labiata (vera) which had 
just arrived from Brazil. After they had been thoroughly cleaned, had all 
old roots removed, and had been fumigated, they were suspended in the 
Cattleya House. I noticed at this time that two or three of them showed 
eyes which had just begun to swell. In course of time, they developed 
pseudobulbs, rather stunted in growth, but, this occurring during the winter, 
no attention was paid to the fact, especially as the bulbs at first seemed 
smooth and even on the surface. At the beginning of April, however, a 
new growth on a fine white form of C. Mendelii attracted my attention, and 
Fic 37. THE CATTLEYA FLy (nat."size and magnified). 
reminded me of the description of new growths infested with the Cattleya 
fly. This shoot was removed, and found to contain white larve with light 
brown heads, proving the presence of this deadly enemy to Cattleyas. I 
also found a growth in the same condition on a Cattleya Triane. The 
plants of C. labiata were at once removed to an ordinary greenhouse, and 
upon close examination, I found that two stunted pseudobulbs, which had 
formed during the winter as above described, showed a number of holes 
from which the insects had already escaped, and it was also apparent that a 
number of new shoots had been punctured by the insect. Every one, 
having the characteristic cone-shape, was removed, and larve were found in 
most of them, but not in all, as I find that this deformity of the shoot may 
be an arrest of growth from other causes than the fly. 
