ISO 



NEW YORK STATE MUSEUM 



control this pest is not after it has become enormously abundant in a city or 

 village and has seriously weakened or nearly destroyed the majority of the 

 elms ; the work should be begun at the outset and the insect prevented from 

 establishing itself in large numbers in any uninfested city or village in New 

 York. \'illage improveinent societies and public spirited individuals inter- 

 ested in the welfare of a community where this beetle occurs would do well 

 to undertake at least an educational campaign against it. 



Description. The skeletonized, brown appearance of the foliage of an 

 infested tree in midsummer is very striking and in the Hudson river valley 

 cities and villages this condition is quite apt to be the work of this pest, but 

 in the western part of the State one or more species of canker worms 

 occasionally strip a few American elms nearly as completely and its work 

 should not be confused with that of this imported elm' insect. 



The parent beetle may be recognized by the aid of the colored figures 

 [pi. 8, fig. 5, 6]. This insect is about y^ inch long with the head, thora.x 

 and margin of the wing covers a reddish yellow. The coal black eyes and 

 median spot of the same color on the head are prominent. On the thora.x 

 there is a dorsal black spot of variable shape and a pair of lateral ovoid 

 ones. The median black line of the wing covers is separated from the 

 lateral stripes of the .same color by greenish yellow. The wing covers or 

 elytra are minutelv and Irregularly punctured, bear a fine pubescence and at 

 the base of each wing cover there is an elongated black spot in the middle 

 of the greenish yellow stripe. The markings are fairly constant in the beetle 

 but the color is quite variable during life and changes more or less after 

 death. Many beetles emerging from winter quarters have the conspicuous 

 greenish yellow stripes of the wing covers nearly obliterated by black. 

 The antennae or feelers are golden yellow with more or less brownish mark- 

 ings. The legs are yellowish witli the tibiae and tarsi marked with brown. 

 The under surface of the head and prothorax is yellowish, that of the meta- 

 thorax and abdomen black. 



The orange yellow eggs are usually deposited in irregular rows side by 

 side, formine clusters of from t. to 26 or more on the under surface of 



