Rose and other scale insects 

 Rose scale, Aulacaspis rosac Sandb. 



1 Stem of rose badly infested, males predominating, slightly enlarged 



2 Stem of rose showing clusters of scales somewhat enlarged 



3 Cluster of female scales and xoung very much enlarged 



4 Two male scales very much enlarged 



Putnam's scale, A s p i d i o t u s a n c y 1 u s Putn. 



5 Piece of mountain ash infested with Putnam's scale 



6 Portion of same very much enlarged, showing young which had settled 



under the old scales 



7 h'emale scale very much enlarged 



8 Male scale somewhat enlarged 



9 Female scales on birch, showing their close connection with the outer 



bark, the scale being almost continuous therewith 



Euonymus scale, Chionaspis c u o n y m i Cumst. 

 IC Euonymus stem thickly incrusted with scales 

 I I Green stem badly infested with young scales 



12 Under surface of leaf thickly dotted with young and male scales and a 



few females 



13 Upper side of leaf showing discoloration 



14 Male scales very much enlarged 



15 Male; scale partly broken, showing insect beneath, very much enlarged 



16 I'ull grown female scale, very much enlarged 



I 7 ( iroup of male and female scales, much enlarged 

 iS Wingctl male, very much enlarged 

 19 Crawling young, very much enlarged 



a 364 



