THE WOOLLY WHITE-FLY. 71 



Aschersonia aleyrodis, in Cuba, and Mr. W. L. Tower, entomoloo:ist of 

 the Porto Kican Experiment Station, reports that in Porto Rico it 

 is held in check by fungi (undetermined). 



REMEDIES. 



So far as known to the writer no remedial measures have been 

 adopted against this pest up to the present time. Its recent dis- 

 covery has not made it possible for experiments leading to its con- 

 trol to be concluded although such experiments are now in progress. 

 From present indications it seems probable that this white-fly will 

 be more easily controlled by fumigation than by spraying, inasmuch 

 as when nearly mature it is very well protected from spray lic{uids 

 by the secretions mentioned above. Present indications are that 

 during the early larval instars it is as well controlled by spraying 

 as are the citrus and the spotted-wing white-flies, with which it is 

 found associated. 



O 



