85 



Figure 64. 



Larva of Gossyparia ulmi, 



the male. Figure 04, gives an enlarged view of the larva seen 

 from above and from the side. These larvae are, as might be ex- 

 pected, exceeding!}- minute objects. They are quite active and 

 run about the tree looking like grains of fine yellow powder. After 

 running over the branches for a short time, this in July here, they 

 settle themselves on the under side of the leaves on young twigs or 

 abont buds. According to Mr. Howard, in species like slippery 

 elm, in which the twigs are hairy or pubescent, they settle on tiie 

 leaves, while in the smoother species they settle on bark or twigs. 

 In August the young lice leave their summer feeding groimd and 

 go to the large branches or tnmk, in the irregularities of which 

 they find hiding places. At this time they produce again quanti- 

 ties of honey dew. Last August this was very abundant beneath 

 some large elms in Burlington. According to Mr. Jack, of the 

 Arnold Arboretum, this honey dew gives out a pungent odor which 

 can be perceived at some little distance, but I have never been able 

 to discover it. As cold weather approaches, the dormant stage with 

 which we commenced is again reached and the insects are in the 

 condition shown in fiirure 01. This insect has been found on the 



