years ago. At the Fruit Growers' Convention, held at Los Angeles in 

 March, 1890, this orchard was reported to have died out. I shall soon 

 investigate, in person, whether there is any foundation for the statements 

 made, and this matter will be the subject for a subsequent bulletin. 



FRUIT PESTS. 



INJURIOUS INSECT PESTS. GREAT DANGER OF THEIR INTRODUCTION 

 INTO THE STATE, WITH NOTES ON THE SAME. 



There is great danger of introducing various kinds of injurious insect 

 pests on imported trees, and the greatest care should be exercised in that 

 direction. When trees or plants are received from a district, whether 

 it be known to be free from insect pests or not, they should be disin- 

 fected and thereby avoid the danger of introducing any new pests that 

 may pass unnoticed. 



In order to aid in identifying insects liable to be on imported trees, I 

 give herewith a short description of each, together with the accompa- 

 nying illustrations: 



PURPLE SCALE. 



Mytilaspis citricola, Packard. 



[A purple scale generally found throughput the State of Florida. It resembles Myti- 

 laspis pomorum (oyster-shell scale), which is common in many places on old apple trees. 

 In Florida it is a very troublesome pest. (I) Twig and leaf infested by the scale, (a) 

 Scale of female from above. (6) Same from below, showing eggs, (c) Scale of male. All 

 highly magnified.] 



The purple scale (Mytilaspis citricola) is one of the most common 

 species of scale insects found on citrus trees throughout the State of 

 Florida. It was imported into Florida (Jacksonville), in 1855, on some 



