PEACH INSECTS 295 



References 



Murtfeldt, U. 8. Bur. Ent. Bull. 32, O. S., pp. 41-44. 1894. 



Pergande, U. S. Bur. Ent. Bull. 18, pp. 26-29. 1898. 



U. S. Bur. Ent. Circ. 88. 1907. 



Md. Agr. Exp. Sta. Bull. 123, pp. If^MfiO. 1907. 



Md. Agr. Exp. Sta. Bull. 149. 1910. 



The European peach scale (Lecanium persicce Fabricius), 

 according to Sanck^rs, has been reported in this country only 

 from California und(n* tlu^ name Lecanium magnoliarum Cock- 

 erell. 



The earlier accounts of L. persicoB in our economic hterature 

 usually refer to the terrapin scale. 



The White Peach Scale 

 Aulacaspis pentagona Targioni Tozzetti 



In the Southern states and in California the peach and re- 

 lated fruits are subject to the attack of a whitish scale frequently 

 known as th(» West Indian i)e<M('h scale. This insect is widely 

 distributtul throughout tlu; warmer regions of the world, occur- 

 ring in Ceylon, India, China, the West Indies, South Africa, 

 Brazil, etc. Its range of food-plants is (extensive, but in this 

 country it has become troul)lesome only on the peach, plum, 

 prune, cherry and apricot. As a peach pest it has been known 

 to be fully as injurious as the San Jose scale. 



The full-grown female scale is about ,'„ inch in diameter, dirty 

 white in color and nearly circul.Mr in outline; the yellowish or 

 brownish exuvium is not generally central, although it is some- 

 times nearly so. The elongate, pure white male scales have a 

 tendency to occur in close clusters usually at the base of the 

 branch or trunk. The winter is passed by the mature females ; 

 in the latitude of Washington they b(;gin egg-laying about 

 May 1. The eggs hatch in a few days and after a short period 



