40 SCHOOL ENTOMOLOGY 



being less than an eighth of an inch in length and quite 

 slender. There are several injurious species. Most of 

 these are found in the tropical or sub-tropical countries. 

 Citrus fruits, in Florida and California, often suffer from 

 their work. We have also one species that attacks pears, 

 others in greenhouses, on carnations, one on onions and 

 one attacking roses, spoiling the appearance of the blossom. 



