Appendix. 



497 



necessary that this pest should be kept in view, as it is one that is very 



serious in other countries. In fact, plants should not be allowed free 



import in this way without inspection, or 



this serious pest may some day be spread 



far and wide over the country, adding 



another to the already many troubles of the 



British fruit-grower. 



It is known in Africa as the White Peach 

 Scale or Peach Diaspis (o). 



Distribution. 



Fernald (3) gives the distribution as fol- 

 lows : — England, Switzerland, Italy, New 

 Zealand, Ceylon, Australia, Hawaiian Is- 

 lands, Japan, China, South Africa, Mauritius, 

 Brazil, West Indies, Panama, Massachusetts, 

 Washington, Ohio, Georgia, Florida, Cali- 

 fornia. 



Lounsbury (5) gives also the Cape and 



Fiji. 



Food Plants. 



Peach, plum, cherry, apricot, walnut, fig. 32i. 



grape, mulberry, geranium, hibiscus, etc. (4). Japanese fruit scale (Diaspis 

 r^^ . 1 1 T ^. ■pentagona) on Mulberry. 



Newstead says it also occurs on the dwari 



flowering almond and tea bushes in Japan. Green says it is very pre- 

 valent on pelargoniums in Ceylon. 



Life-History, Etc. 

 I have not seen any British speci- 

 mens of this pest, so give Newstead's 

 account verbatim (2) : " To the unaided 

 eye the scale or covering shield of the 

 female is more or less circular, and 

 closely resembles the common rose 

 scale {piaspis rosse), but is of a dusky 

 white, the old examples being smoky 

 grey or ochreous, and harmonising 

 with the colour of the bark. They 

 are the size of an ordinary pin's head, 

 and measure from 1 to 2 mm. Beneath 

 this scale the wingless, legless, inert, 

 fixed body of the female undergoes its transformations, lays its eggs, 



[F. Edenden. 

 •2.— Diaspis pentagona [ ? ). 



From Mulberry. 

 (Greatly enlarged.) 



and dies (Figs. 322 and 323). 



