23] 



A striped ciitcrpillar with black head, Ijearing a white /^-mark (Fig. 

 GO, a), five luiinterruptod whit(! fines running backward from the Jiead 

 (P'ig. 59; (>(),//). Mats iiitf) the growing tip ot the; partly grown plant 



from July on The Grass-worm, p. 81 



II, (Iround color livid brown (paler when full grown); five longitudinal white 

 lines, the dorsal line c(jntimious, the others absent on several segments 

 in front of the nuddle of the body. Head with dark lateral bands. 

 Enters very young plants at tip and eats downward into the "heart" 

 (hence called "heart-worm"). Jjater, eats into stalk from without. . 

 The Common Stalk-bore^r, p. 44 



Grayish, with a faint whitish line at the middle of the back, a broad dark 

 patch at the base of each leg Leucania pscmkirgyria, p. 171 



Striped brown and yellowish, with a distinct narrow black line on each side 



of the body (Fig. 62). Head with parallel bands (Fig. 63, a) 



The Wheat-head Army-worm, p. 83 



Plant covered by a web, caterpillars dotted with black 



Garden Web-worms, p. 89 



15. Small beetles a quarter of an inch long or less. 16 

 A black-spotted beetle, like a ladybug, about three eighths of an inch 



long, sometimes found on corn (Fig. 192) . .The Argus Tortoise-beetle, p. 192 

 Slender beetles, over half an inch long, eating the leaves, especiallv 



between the veins (Fig. 94-97, Blister-beetles, p. 111). 19 



Broad, flat, heavy beetles, clay-brown, with small black spots and 



dashes Euphoria inda, p. 99 



16. A dark grayish beetle, with three or four toothlike projections of the 



sides of the thorax (Fig. 84) The Southern Corn Leaf-beetle, p. 103 



Yellow or greenish elongate beetles, rarely blackish, eating the leaves, 



silks, pollen, and immature grain. 17 



Reddish or yellowish black-spotted oblong or oval beetles. 18 



A gravish, banded, inflated beetle with broad snout eating the leaves 



(Fig" 98) The Imbricated Snout-beetle, p. 1 13 



17. Green; no markings (Fig. 186) Diahrotica longicornis, p. 188 



Yellowish; eleven or twelve black spots (Fig. 184) 



The Spotted Diabrotica, p. 187 



Yellowish; three black stripes (Fig. 185). .The Striped Cucumber-beetle, p. 188 

 Blackish tliroughout Diahrotica atripennis, p. 189 



18. An oval red beetle with two oval black spots on the thorax and ten black 



spots on the wing-covers (Fig. 174) The Common Ladybug, p. 179 



A convex, oval, yellowish beetle, with one black spot on the thorax and nine 



on the wing-covers (Fig. 173) Coccinella 9-nolata, p. 179 



Oblong, yellowish or reddish, with one spot on the thorax (Fig. 183). 



The Spotted Willow-beetle, p. 186 



19. Yellowish, striped with black (Fig. 94, 97) 



The Striped Blister-beetle, p. 1 1 1 



Black throughout (Fig. 95) The Black Blister-beetle, p. 112 



Black, with gray border to wing-covers (Fig. 96) 



The Margined Blister-beetle, p. 1 1 2 



The Corn Cutworms. 



These are thick, soft-bodied, smooth, sluggish caterpillars, whitish to dark 

 brown in color, variously marked, in many cases with longitudinal stripes. 

 When disturbed they curl up without attempting to escape. 



A glassy whitish or slightly smoky caterpillar without stripes or other markings 



and with a red head. Cuts off the plant below ground. 2 



A smooth caterpillar marked only with even stripes. 3 



A caterpillar with spots or distinctly irregular markings, the head pale, with 



a network of dark lines on each side and a distinct narrow dark stripe each 



side of the middle. 9 



2. Neck shield blackish brown (Fig. 1) The Glassy Cutworm, p. 19 



Neck shield the same color as the head. .The Yellow-headed Cutworm, p. 21 

 Distinctive characters not known Ifadena Ucjnicolor, p. 31 



3. Pale stripes not of similar width; head not entirely pale. 4 

 Five uniform pale stripes, with intervals about twice the width of the 



stripes; ground color of younger caterpillars green, that of the older 

 dark bronze-brown, and the stripes darker; head \miformlv pale 

 (Fig. 12) The Bronze Cutworni, p. 29 



