REPORT OF THE STATE ENTOMOLOGIST 1901 855 



167 Golden oak scale insect, Asterolecanium variol- 

 osum Ratz. Principal food plant: oak. 



Treatment: Spray with kerosene emulsion in early summer. 

 Chief accessible articles: Lowe, V. H. N. Y. agric. exp. 'sta. 

 Rep't, '95. p. 550-51. 



168 Barnacle scale insect, Ceroplastes cirripedifor- 

 m i s Comst. A southern species which occurs on orange and 

 quince. 



169 Lecanium armeniacum Craw. A species recently intro- 

 duced into New York state. 



Principal food plants: grape, currant. 



Chief accessible notice: Felt, . E. P., state ent. 14th rep't, '98. 

 p. 240. 



170 Cherry lecanium, Lecanium cerasifex Fitch. Oc- 

 curs rather commonly on maple, oak, cherry and appletrees. 



Treatment: Spray infested trees in winter or in early spring 

 with kerosene emulsion (1-4). 



171 Lecanium fitchii Sign. Infests raspberry and 

 blackberry bushes. 



172 Common greenhouse lecanium, Lecanium hesperi- 

 d u m Linn. A bad pest on many house and greenhouse plants. 



Treatment: Spray or wash plants with kerosene emulsion or 

 a soap solution. 



173 Black scale insect, Lecanium oleae Bern. A seri- 

 ous pest on many plants in California. 



174 New York plum scale insect, Lecanium prunastri 

 Fonsc. Principal food plant: plum. 



Treatment: Spray infested trees with kerosene emulsion 

 (1-4) just after the leaves fall. 



Chief accessible articles: Slingerland, M. V. Cornell agric. exp. 



sta. Bui. 83. '94. p. 681-99; Bui. 108. '96. p. 



82-86; Lowe, V. H. N. Y. agric. exp. sta. Bui. 136. '97. p. 583-86. 



175 Tuliptree scale insect, Lecanium tulipiferae Cook. 

 Principal food plant: tuliptree. 



.Treatment: Spray infested trees with kerosene emulsion or 

 whale oil soap solution. 



