Rose and other scale insects 

 Rose scale, Aulacaspis rosae 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 young very much enlarged 



4 Two male scales very much enlarged 



Putnam's scale, Aspidiotus ancylus 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 Female 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 euonymi Comst. 



10 Euonymus stem thickly incrusted with scales 



1 1 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 Full grown female scale, very much enlarged 



17 Group of male and female scales, much enlarged 



18 Winged male, very much enlarged 



19 Crawling young, very much enlarged 



a 364 



