THE MONTHLY BULLETIN. 



131 



Natural Enemies. — The internal parasites, Aplielinus fuscipennis, 

 Aphelinus mytilaspidis, Aspidiotiphagus citrinn<< and the predaceous 



Fig. 114. — Apples infested with pernicious scale {Aspidiotus per- 

 niciosus Comst. ). (After Britton. ) 



ladybird beetles, Chilocorus biuulnerus, Lindorus lopanthoi, Orcus 

 chalybeus, prey upon this scale very effectively. 



THE FLORIDA RED OR CIRCULAR SCALE. 



Chrysomphalus aonidum (Linn.). 



(Ghrysomphalus ficus Ashm.) 



(Pig. 115.) 



General Appearance. — The scales are characterized by their exceed- 

 ingly regular and circular shapes, shining dark brown surface and 

 median circular exuviw. They are slightly larger, more regular, and 

 darker than the common red orange scale {Chrysomphalus aurantii). 



Distribution.— Though this species is troublesome in the southern 

 Gulf States as an outdoor pest, its attacks in California are almost 

 entirely confined to greenhouses in the central and northern parts and 

 to subtropical ornamental gardens in the southern part of the State. 

 It is not an orchard pest. 



Food Plants.— The favorite food plants of this species are palms 

 and rul)brr trees. (3ther plants attacked are Araucaria bidwillii, Aspi- 



