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DD. — Dark brown caterpillars, with a lateral row of 

 white hairs and bright red tubercles on 6th and 

 7th abdominal segments; hibernate as M grown 

 caterpillars in nests of webbed leaves on tips of 

 trees; adult moth with a tuft of brown hairs at 

 tip of abdomen. 

 Brown-Tail Moth. (Euproctis chrysorrhoea). 

 CCC. — Adults are Butterflies. Caterpillars large, black, red- 

 marked and spiny, feeding in clusters on terminal 

 branches of elm, willow, poplar. 

 Spiny Elm-Caterpillar. (Euvanessa antiopa). 

 CCCC. — Adults are beetles. Adults eating irregular circular 

 holes in elm leaves and grubs skeletonising the under 

 surface. 

 Elm-Leaf Beetle. (Galerucella luteola). 

 CCCCC. — Adults are Sawflies. 



D. — Larvae cylindric, coiled, yellowish-white, with a 

 black line down the middle of back, on elm, poplar, 

 willow, etc. 

 Elm Sawfly. (Cimbex americana). 

 DD. — Larvae with jet black head and green body, each 

 segment except second marked with double par- 

 allel bows of dark dots; feeding on larch leaves. 

 Larch Sawfly. (Lygaeonematus erichsonii). 

 AA. — Boring in trunks and branches. 

 B. — Adults are moths. 



C. — Whitish caterpillars with distinct spots and tubercles 

 making burrows in twigs and larger branches, which often 

 die and project above leafy branches. Moths are white 

 with blue and black markings. 



Leopard Moth. (Zeuzera pyrina). 

 CC. — Large white or reddish-white caterpillars making large 

 round irregular borings in oak, maple and locust. Moth 

 is large, dark grey. 



Carpenter Worm. (Prionoxystus robiniae). 

 BB. — Adults are beetles. 



C. — -Long-horned or cerambycid beetles. 



D. — Large, fleshy, legless grub making broad shallow 

 tunnels in sapwood of sugar-maples, often killing 

 limbs. Adult beetle brilliantly marked with yellow 

 and black. 



