A. N.Caudeii, 



Insects Infesting Orange, Lemon and Lime Trees. 



CUAP. 



The Red Scale (Ai^pidiofus aurantU) 86 



The Red Scale of Florida, ( Axpidiotus fie us) 87 

 The Lemon-peel Scale {AxpidiotiM nerii). ..88 

 Pergande's Orange Scale (A.spidiotus per- 



gandii) 89 



The Citrus Leaf and Fruit Scale (Aiipidiotxis 



eitricola) 90 



The Soft Orange Scale (Lecanium hetiperi- 



duiii.) 91 



The Cottony Cushion-scale {Iceryapurchaai) 92 



The following insects also infest Citrus 



trees : 



The Black Scale {Lecanium olece). 



The Filbert Scale {Lecanium hemisphericum). 



The Common Mealy-bug {Dactylopius adoni- 

 dum). 



The Destructive Mealy-bug (Dactylopius de- 

 structor). 



The Red Spider (Tetranychus telarius). 



CHAPTER LXXXVI. 



I 



The Red Scale. (Cal.) 



(Aspidiotus aurantii — Maskell. ) 



Synonym. — Aspidiotus citrii — Conistock. 



Order, Hemiptera ; ) -rr ■-, ^ 



o 1 1 TT [ Family, Coccid.e. 



bub-order, Homoptera ;) -^ ' 



[A circular reddish scale insect, infesting the citrus trees, 

 and has been found on grape vines and the foliage of walnut 

 trees.] 



The red scale (Fig. 128) infests some of the citrus groves of 

 Southern California, and orange trees in Sacramento and 

 Mar3^sville. It has also been found on grape vines and on the 

 foliage of walnut trees, but I do not think that any damage 

 will be done to these plants by this pest. As the walnut sheds 

 its foliage annually, the insects are likely to be destroyed; 

 and those which I have examined on the grape vines in the 

 month of September, and which appeared to be in a healthy 

 11 



