302 



GUIDE TO CALIFORNIA INSECTS, 



-^.K^ 



Figure 308. First and second stag-es of unarmored scale insects. 1 and 4, Sais.?ctia 

 olete. 2 and 5 Coccus hesperidum. 3 and 6 Lecanium corni. 



Sph^rococcus bambusse — Chsetococcus. X'insonia stellifera (Westv\.) 



distichlium (Kuw.) Xerophilaspis prcsopidis 'Ccc.) 



Targionia bigeloviae (Coc.) Xylococcus macrocarpse Gol. 

 dearnessi (Coc.) quercus Ehr. 



THRIPSINA. 



The thrips have been largely neglected by entomologists until v/ifhin the 

 last few years. The damage done by the pear thrips first attracted great 

 attention and later the orange thrips and numerous other species have 



