78 STATE BOARD OF AGRICULTURE. 



HELIOTHRIPS Halid. 

 H. clracanse Heeger. On hot-house plants. 

 H. haemorrh.oid.alis Bouche. On hot-house plants. 



THRIPS Linn. 

 T. sex-maculatus Pergande. Occurs on leaves of various plants. 

 T. tabaci Lindem. Infests cabbage, onion and other vegetables. A serious 



pest locally and seasonally, especially on onions (Sm). 

 T. tritici Fitch. On grain, grasses, and in flowers ; also in tips of nursery 



peach trees, sometimes causing serious injury. 



PHL030THRIPS Halid. 

 P. caryse Fitch. Occurs on hickory. 

 P. mali Fitch. Found on leaves of apple. 

 P. nigra Osb. Infests clover. 



P. phylloxera Riley. Occurs in galls of Phylloxera and is said to feed on its 

 inhabitants (Sm). 



