226 



A. In.iuriios to thk Lkavks. 



Injuries to tlic- green leaf. 



The dry leaf eaten in the fodder stack, mostly inside tli<', stack, \>y a dull- 

 brown striped caterpillar about an incli louj;- (Fif!;. (if)) 



The Fodder Worm {Epizeuxis cemida), p. 80 



2. Leaves coarsely ragged in late sununer or fall, often eaten away to the 



midrib, injury much the worse at the etige of \\w. field 



" The Leaf-eating (hthoptvra of the Corn Field," p. 229 



Regular parallel rows of similar holes running across the leaf of the 



young plant (PI. IIL) The Snout-beetles, p. 229 



lycaves of young plant irregulai-lv pepjx'red witli small holes or surface" 



pits, made bv small jumping Ix-etles (Fig. SS, 90-93, 187-189) 



■ The Flea-beetles, pp. 106, 190 



ijeav(!s marked with winding pale streaks like worm tracks, a footless 



maggot within the leaf (Fig. 154, 155) Ceratomyza dorsaiis, p. 165 



The Corn Leaf-miner {Diastata sp.), p. 164 



Lea\es folded, the sides of the fold fastened together, and a cater- 

 pillar concealed within I,eaf-rollers, p. 174 



Leaves gnawed superficially betwi-en the veins in small oblong patches 



(Fig. 49) by young caterpillars, especially by yoimg garden web-worms 



(p. 89) and by the white hairy young of the yellow bear (Fig.[46) p. 72 



Leaves eaten at the edge, or irregular holes made. 3 



I^eaves with minute, specklike iliseolorations, due to small sucking 



insects "Insects injuring the Corn Plant obscurely," p. 233 



3. Injury to the young plant, the stem often gnawed; a webbed nest at the 



base of the plant made of particles of dirt held together by webbing 

 (PMg. 20), with a tubular retreat in the center, opening at the surface 

 near the plant The Sod Web-worms, p. 230 



A silk-lined tubular burrow opening at the base of the plant and going at 



least several inches into the earth; leaves or stalk eaten 



The Burrowing Web-worms, p. 95 



Miscellaneous leaf injuries not above included (See "The Corn Cut-worms," 



p. 231, and " The Stalk-borers," p. 232) 



" Insects Eating Irregular Holes," etc., p. 230 



B. Injuries to the St.\lk above Ground. 



Stalk of young plant cut off smoothly at the surface of the ground . Cutworms, p. 231 

 The Burrowing We!)-worms, p. 95 



Stalk irregularly eaten into, sometimes irregularlv severed, leaves also irregularly 



eaten, (Fig. 20) ' The Sod Web-worms, p. 230 



The Burrowing Web-worms, p. 95 



Stalk penetrated and burrowed within by caterpillars The Stalk-borers, p. 232 



Decaying cavities in stalk due to footless maggots usually found working 

 therein (Pig. 153) The Stalk-maggot {Chatopsis cenen),p. 164 



C. Injuries to the Silks or to Kernels at the Tip of 



THE ]^]aR or BENE.\TH THE HuSKS. 



Hound hole through husks, with excrement exuding; kernels eaten beneath by 



a brownish or greenish striped caterpillar (PI. IV.) 



The Ear-worm, or Corn-worm. p. 67 



The Grass-worm, p. 81 



Other injuries to the growing ear, and to the silk. 2 



Other injuries to the ripened ear in fall, especially to the exposed grains at the tip 



or to ears on fallen stalks. -^ 



2. Injuries to the tip of the ear bv grasshoppers, katvdids, etc 



; " The Leaf-eating Orihoptera," p. 229 



The ear penetrated at the tip by broad green or brown beetles half an 



inch long or more, and the kernels eaten 1)eneath the husks. 4 



The growing cob eaten by an ashy gray June-bug. .The Scaly June-bug, p. 184 



The ripening kernels burrowed in all directions by beetle larva?. New 



Mexico p. 186 



Small dark green caterpillars about half an inch long feeding in the 

 growing ear The Rustv Brown Tortrix, p. 176 



