i:srSECTS AFFJE€TI]¥€i THE APPJLE. 



{ri/ras viahi--'.) 



Injuring- the Itooti^i. 



1. APPLE-ROOT PLANT-LOUSE. 



Schizoneura Icuiigera (Hausm.) 

 Syn. Eriosoma jjyri. (Fitch.) 



[Injured roots: figures of roots, larva, winged form anil details of structure from Riley's 1st 

 Mo. Keport.] 



Parasites : 

 Aphelinus mall (Hald.) 



Enemies : 

 Scymnus eervicalis Muls. 

 la. Pipiza radicum Eiley. 



[Figures in all stages from Kiley's 1st 3Io. Report.] 



Remedies: Kerosene emulsion under and above ground; scalding 

 water poured freely about roots ; bisulphide of carbon. 



Chief Articles: AValsh, 1st Kept. Ins. 111., p. 55-63 ; Riley, 1st Rept. 

 Ins. Mo., p. 118-123; Corastock, Rept. Dept. Agric, 1879, p. 258-259. 



Injuring: tlie Trunk. 



2. APPLE BARK-BEETLE. 



Monarthrum mali (Fitch.) 



[Adult beetle.] 



. 3. APPLE-TREE XYLEBORUS. 



Xylchorus obesus Lee. 



[Bark showing work, adult beetles.] 



4. ROUND-HEADED APPLE-TREE BORER. 



Saperda Candida Fabr. 



Syn. Sajjerda hlvlttata Say. 



[Wood with burrow of the larva, larva, adult beetles: figures of all stages from Riley's 1st 

 Mo. Report.] ' 



Preventives: Alkaline washes; soap; washing-.soda ; mixture of white- 

 wash and Paris green. 



Chief Articles: Ilarris, Ins. Inj. to Veg., p. 107-109; Riley, 1st 

 Rept. Ins. Mo., p. 42-46. 



