INJURIOUS INSECTS 



311 



TANKER WORM. (Paleacrita rcrnald Peek. ; order 

 Lepidoptera.) The "measuring-worm" larva, about an 

 inch long, feeds upon the leaves. When disturbed it 

 suspends itself by a thread. 



Preventive. ribands smeared with tar, printers' ink, 

 or a similar harmless adhesive substance, placed around 

 the trunks of the trees, about first of February, to pr&- 

 vent the ascent of wingless parent female. 



Remedy. Thorough spraying with arsenites; very 

 effective. 



CODLING MOTH. ( < 'tiri>oc<if^a ponwnclla Linn.; 

 order Lepidoptera.) The larva a whitish worm, found 

 feeding in or toward the core of the apple. Generally 

 two broods. For adult, see Fig. 104. 



Remedies. Thorough spraying with arsenites, when 

 blossoms have fallen ; then again ten days later. See 

 pages 129, 131. Can be used profitably with Bordeaux 

 mixture for apple scab. Two broods. Larvae and 

 chrysalids will secrete themselves in burlap, cloth or 

 paper bands in forks of trees, or around trunk. These 

 can be destroyed every seven to nine days. 



FALL WEB WORM. (Hyphaniria cunca Drury ; or- 

 der Lepidoptera.) A hairy caterpillar varying in color 

 from gray to pale yellow or bluish black. It feeds upon 

 the leaves of many trees, and lives in w y ebs. 



Remedies. -Remove the webs; crush, or burn occu- 

 pants. Spray with arsenites. 



ROOT LOUSE. (Schizoneura lanigera Hausm. ; or- 

 der Hemiptera.) A small insect whose presence on 

 the root is manifested by knotty swellings of roots and 

 the presence of bluish white " wool." In another form 



