128 



THE MONTHLY BULLETIN. 



Life History.— Same as the other species of this genus of which 

 the San Jose scale is given as typical. This species is cosmopolitan 

 and is everywhere throughout the State. It is a greenhouse pest and 

 often causes alarm to citrus growers by appearing on the fruit, but 

 we find it attacks only old ''tree ripes." It is perhaps most serious 



Fig. 111. — Aspidiotns hcderw (Vail.) on lemon 

 and in such cases known as the lemon peel scale. 

 (Essig, P. C. Jr. Ent.) 



in many of the olive orchards in the Sacramento Valley, where it 

 infests the fruits so as to make them unfit for pickling purposes.- 



Distribution. — Throughout the entire State and country. 



Food Plants. — Ivy, oleander, holly, boxwood, orange and other citrus 

 species, olive, plum, cherry, currant, maple, camellia, grass, clover, 

 yucca, asparagus fern, pepper tree, Buscus aculeatus, Ceratonia, Cer- 

 cis, Erica, Ruhia peregrina, Genista, Daphne gnidium, Quercus 

 ilex. Aloe unihellata. Agave palmeri, Acacia sps., Cycas revoluta, Myv- 

 sine retusa, Vriesia splcndens, Carpodetus serratus, Vitex littoralis, 

 ferns {Filicales), maidenhair fern, Cyperus alternifoUus, Eucalyptus 

 sps., fan palm {Latania horhonica) , magnolia, umbrella tree {MeJia 

 azedarach) , mullierry, Opuntia liltoraUs, Fhaniix dactylifera, mistletoe. 



