33 



The Scurfy Scale. 

 (Chionasjns furfura Fitch. ) 



The scurfy scale, probably a native of this country, is generally 

 abundant over the eastern United States, but is most plentiful 

 south of New England. 



The scale itself is somewhat smaller than that of the oyster- 

 shell scale, and is usually broader in proportion to its length. 

 One end is somewhat pointed, while the otlier is irregularly 

 rounded, the general color 

 being a dirty white, which 

 makes it quite noticeable 

 (Fig. 2, a and c). 



The scales of the male 

 (Fig. 2, 6 and d) differ 

 from those of the female 

 above described in form, 

 and are also smaller. 



The habits of this scale 

 are similar to those of the 

 oyster-shell scale, the win- 

 ter being passed in the egg 

 stage. The ten to seventy- 

 five eggs which may be 

 found under the female 

 scale hatch in June, and 

 the purplish young crawl 

 about for a few days, after which they settle down to feed. The 

 remainder of the life' history is mucli the same as that of the 

 oyster-shell scale. 



The scurfy scale is found on the apple, crab-apple, pear, peach, 

 cherry, quince, Japan quince, currant, mountain ash and many 

 other plants. 



Treatment for the Oyster-shell and Scurfy Scales. 

 The treatment for these two scales is comparatively simple. As 

 there is but one brood of young each year, the infested trees or 

 plants should be sprayed soon after the young hatch from the egg ; 

 this will be some time in June, varying with the season. The 

 material used for spraying may be either kerosene emulsion or a 

 mechanical mixture of kerosene and water. If kerosene emulsion 

 be used, it should be prepared as follows : hard soap, shaved line, 

 one-half pound ; water, one gallon ; kerosene, two gallons. Dis- 

 solve the soap in the water, which should be boiling ; then remove 



Fig. 2. — Scuiiy scale: a, female, b, male scales 

 natural size on twigs; c, female scales, much en 

 lai'ged; d, male scale, much enlarged. (Howard, 

 U. 8. Dept. Agr., Yearbook, 1894.) 



