856 NEW YORK STATE MUSEUM 



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

 (Mus. bul. 23) p. 213-16. 



176 Cottony maple tree scale insect, Pulvinaria innu- 

 merabilis Rathv. Principal food plants: maple, elm, grape. 



Treatment: Spray young in July with kerosene emulsion or 

 whale oil soap solution. A powerful stream of cold water or 

 a stiff brush will dislodge many females. 



Chief accessible articles: Lintner, J. A., state ent. 6th rep't, 

 '90. p. 111-47; Felt, E. P. Fisheries, game and forest com. 4th 

 rep't, sep. '98. p. 29-31 ; Jloward, L. 0. U. S. dep't agric. div. ent. 

 Bul. 22, n. s. '00. p. 8-16. 



177 Putnam's scale insect, Aspidiotus ancylus Putn. 

 Principal food plants: maple, elm, currant, fruit trees. 



Treatment: rarely injurious. 



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

 Bul. 136. '97. p. 593; Felt, E. P. N. Y. state mus. Bul. 46. '01. p. 

 326-30. 



178 Aspidiotus dictyospermi Morg. A greenhouse 

 species occurring on Areca lutescens. 



179 Cherry scale insect, Aspidiotus forbesi Johns. 

 Principal food plants: cherry and apple trees. 



Treatment: Spray infested trees in winter or early spring 

 with a contact insecticide. 



Chief accessible article: Felt, E. P. N. Y. state mus. Bul. 46. 

 '01. p. 330-32. 



180 Ivy scale insect, Aspidiotus hederae Vail. Prin- 

 cipal food plants : common on ivy and a number of other green- 

 house plants. 



Treatment: Spray infested plants with an ivory or whale oil 

 soap solution. 



Chief accessible articles: Lintner, J. A., state ent. 11th rep't, 

 '96. p. 203-4; Felt, E. P. N. Y. state mus. Bul. 46. '01. p. 333-36. 



181 Aspidiotus lataniae Sign. A greenhouse species 

 infesting palms. 



182 European fruit tree scale insect, Aspidiotus ostreae- 

 f or mis Curt. Principal food plant: plum. 



