I'DG Fiftieth Report ox the State Museum 



double row down the middle of the back. The growing young become 

 darker and finally assume a yellowish-red color. Each segment be- 

 comes covered with spiny processes secreting wax. The general form 

 of the young larva is retained (PI. XIV, fig. 4). The antenna of the 

 female before impregnation, is composed, like that of the young, of six 

 segments, the second and third being the longest and the fourth and fifth 

 shortest. The antenna of the immature male has six nearly equal seg- 

 ments and a longer seventh. 



The oval cottony-like cocoon of the male is represented in figure 3, 

 of Plate XIV. The presence of the insect within may be known by its 

 two long protruding anal filaments. 



The male will rarely be seen by most observers. It is a delicate two- 

 winged creature of a reddish color, with rather large antennae for so small 

 an insect. It moves slowly over the limbs with a clumsy air. It is not 

 easily disturbed and rarely takes to flight. An interesting feature is 

 the occurrence of two forms. The earlier to appear, — the pseudimago,— 

 is characterized chiefly by wing-pads in the place of normally developed 

 wings. A few days later the perfect males with fully expanded wings 

 come forth. Although the pseudimago is incapable of flight, it can 

 probably perpetuate its kind, as it has been observed in coition. 



Life-History. 



This insect is the most conspicuous in the months of April, May and 

 June, as the females are then about full-grown and are preparing to give 

 birth to their young. Their active yellow progeny make their appear- 

 ance in the latitude of Albany early in July. They move rapidly over 

 the bark for a time and then settle along the veins of the leaves, princi- 

 pally the midvein, and in large numbers on the greener tips of the twigs. 

 A few may be found in the crevices among the old females. They remain 

 in these positions until into September or later, when many desert the 

 leaves and establish themselves on the bark of the twigs for the winter, 

 although it appears that numbers do not take this precaution in time, but 

 fall with the leaves and are scattered by the winds. Many of the latter 

 must perish, although a few may live to establish colonies in new localities. 

 The winter is past in the immature form, the insects being about two- 

 thirds grown, and protected by a whitish excretion from the numerous 

 processes covering the dorsal surface. At the first warm weather in 

 the spring, the wintered individuals show signs of activity. Early in 

 April the females molt for the last time and the males form their 

 cocoons. At this time many travel some distance before selecting a suit- 



