CALIFORNIA CITRUS CULTURE. 



INTERNAL PARASITES PREYING UPON CITRUS PESTS. 



HYMENOPTEROUS. 



Aphidiits tcstaccipcs (Cress.) 



(Jut rips acanthopsis (Ashm.) 



(1o my a fusca How 



Hncyrtus flaws How 



Sdttettitta ci/anca Mot sch 



Ckrysopfatycervs splcnriciis How 



CliciloiK'iinis ddcti/lopii How 



Tow ocrm colifornicQ How 



A pin/ens flarus How 



Aphycui iin nidciildt us How 



. 1 spidiotiphagus citrinus Craw 



I'roxpaltella aurantii How 



Riunipliora occidental;.? How 



Aphclimts (t idH/tidis How 



Ooccophdffus liuinldtiiK IIo\v 



C7occophagU9 Iccaiiii (Fitch) 



Eupelntus mirabilis (Walsh) . 



DIPTEROUS. 



Cryptodujetum iccri/tr \Vi 

 L fit co pis bcJIa I^oew 



Pest preyed upon 



Citrus aphids. 



Black citrus louse. 



Frosted scale. 



Soft brown scale. 



Black and hemispherical scales. 



Mealy him'. 



Mealy brj?. 



Black scale. 



Soft, brown scale. 



Red scale. 



Red, yellow, purple scales. 



Yellow and purple scales. 



Yellow scale. 



Red scale. 



Red scale. 



Soft brown scale. 



Iv4us of katydid. 



Tottony cushion scale. 

 Mealy bugs. 



FIG. 4'2. The purple scale parasite, Aspidiotiphagus 

 citrinus Craw. (After Howard.) 



