San Jose and other scale insects 

 San Jose scale, A s p i d i o t u s p e r n i c i o s u s Comst. 



1 Badly infested piece of thorn. Scurfy scale, Chionaspisfurfura 



Fitch also present, natural size 



2 Male San Jose scale very much enlarged 



3 Female very much enlarged 



4 Group of female and young much enlarged 



5 Yv)ung white and I^lack scales on green twig, showing the surrounding 



purplish discoloration 



6 Cherry twig badly infested with \oung, some in the white and many in 



the black stage 



7 Young very much enlarged, a number of white, one grayish and a black 



scale 



8 Group of young in the black stage very much enlarged 



Oyster scale, Lepidosaphes ii 1 m i Linn. 



9 Infested twig, natural size 



10 Female \er)' much enlarged 



1 1 Underside sliowing whitish eggs 



12 Male scale very much enlarged 



13 Group of old female scales, one with hole from which parasite has 



emerged and three half grown scales 



14 Female of oyster scale 



Scurfy scale, Chionaspis furfur a p'itch 



15 Group showing females and males, much enlarged 



16 Female scale very much enlarged, with a jjortion torn away showing 



the purplish eggs beneath 



17 Male scale very much enlarged 



18 Group of old scales somewhat enlarged 



a 362 



