606 



NEW JERSEY AGRICULTURAL COLLEGE 



were particularly in evidence in Montclair, where, in late June and 



early July, scarcely an egg mass could be found that was not or had 



not been attacked by them. Development was somewhat irregular, and 



some larva3 were found as late 

 as July 15th, but by that time 

 most of them had pupated. 

 The first pupa was observed 

 June 26th, and according to 

 observations in the laboratory, 

 remained in that stage about 

 two weeks. At first the in- 

 sects appeared to prefer crev- 

 ices in the bark, but later most 

 of the pupse occurred in the 

 "eaten-out" egg masses. Dur- 

 ing July many of the beetles 

 were seen, sometimes feeding 

 upon the young sets, but by 

 the end of the month the ma- 

 jority had disappeared, — pre- 

 sumably into hibernation. The 



pupa is a chunky, hairy little creature, brown in color, but generally, 



in wliole or in part, covered by the white, secreted material of the larva. 



The adult is a small, nearly round and very convex beetle, measuring 



about one-eighth of an inch in 



length, although varying much in 



size. It is black, with a single, 



round, red spot near the center of 



each wing cover, and in the males 



has the head, and front and sides 



of the thorax yellow. 



The great good done by this in- 

 sect was most evident in Mont- 



clair, where so many young scales 



were destroyed that not more than 



a dozen sets remained on a leaf, 



where, under ordinary conditions, 



there would have been between 



500 and 1,000. 



The other enemies observed were minute Tlijmenoptcvous parasites. 



The first one noted was Eunotus lividus Ashm., a small and very dark 



Fig. 3G. 



Larva of Coccinellid, Hyiieraspis sigyiata Oliv. 

 enlarged. Original. 



Fig. 37. 



The Coccinellid, Huperaspis signala Oliv. 

 enlarged. Original. 



