1907 



ENTOMOLOGICAL SOCIETY. 



61 



The life history of this scale is said to be as follows : It passes the win- 

 ter in a partly grown stage. The males emerge about the end of April. In 

 May the young begin to come forth and eggs and young may both be found 

 up to about July. There are two broods in some of the American States, but 

 whether there is more than one in Ontario has not yet been discovered. 



The Cherry scale has been found in Ontario at Ottawa, London, St. 

 Catharines, Grimsby, and in Prince Edward county. 



The host plants so far discovered are cherry, apple, hawthorn, fragrant 

 currant, and beech. 



Remedies : 



The same remedies should be used as for the San Jose scale. 



Natural Eneinies : 



Several species of Chalcid flies are said to attack it, also a tiny white 

 mite, and the twice-stabbed ladybird beetle (Chilocorus bivulnerus, Muls.) 



The English Walnut Scale (Aspidiotus juglans-regioe, Comst.) Eigs. 21 

 and 22. 



Fig. 21. The English Walnut Scale (Aspiodiotus juglans-regice). (a) F.emale scale; (h) 

 male scale: (c) male chrysalis; (d) male scales on twig; (e) female scales on twig, 

 a, h, c, enlarged; d, e, natural size. After Howard. From U.S. Dep. Agr., Year 

 Book for 1894. 



Fig. 22. Anal plate of English Walnut Scale, showing the large median lobes, and 

 notched outer margin of second lobe. 



The English "Walnut scale has been found in Ontario in only two or 

 three localities, although it probably exists in several others. If some sam- 



