BLUEBERRY INSECTS IN MAINE. 285 



When first hatched the nymphs are colorless except for their 

 red eyes and the femoro-tibial joint, which is at first red, but 

 sooner becomes blackish. The distal border of the first antennal 

 segment is black. The caudal half of the abdomen is dark. In 

 the second instar, three white dots appear on the abdomen. Tn 

 the third instar the eyes are red ; the legs are practically color- 

 less ; the second and third segments of the antenna are black; 

 the dorsal part of the abdomen is brown, the cephalic border of 

 the first segment being dark brown ; there is a round white spoi 

 in the middle of each of the abdominal segments i, 2 and 3. 



The older nymphs are light brown in their general color as 

 is also the adult. The writer is not sure of the exact number 

 of nymphal instars. In general the early instars last 5 days, the 

 later 7 to 8, and the pre-adult 10 or more. A young nymph, 

 (probably second instar), a nymph two molts before the imago, 

 and an adult are shown in figure 61. 



The young nymphs especially are very neat and frequenth 

 clean beak and antenna. This is usually accomplished by holding 

 out the prothoracic legs in front of the body with the tarso- 

 tibial joints brought together, and drawing the antenna or beak 

 through the point of union. 



• The later nymphal instars and the adults may be swept quite 

 generally on the bushes in late August and early September, 

 tlie only time when they seem at all numerous. 



A Scale Insect Pseudococcus sp. 



Occasionally a little scale insect was found in the calyx end 

 of the berry. None of these mealy bugs were sufficiently mature 

 to render a specific determination possible. Doctor Patch 

 kindly determine them for the writer as Pseudococcus sp., 

 closely related to, if not identical with P. citri. 



Inse;cts Which are Primarily Leaf Fe;eders. 



The writer paid only slight attention to any except fruit in- 

 sects until the summer of 191 5. There is a large variety of 

 insects which feed -on the leaves of the blueberry, but for the 

 most part they are neither particularly common nor injurious. 

 The list includes principally Geometridae and Noctuidae among 

 the Lepidoptera, Tenthredinidae among the Hymenoptera. and 



