84 



JOURNAL OF ECONO^lIC ENTOMOLOGY 



\Yol. 8 



Pupa 



Pupse were found only in the second year after the eggs were found. 

 In the field, the}'' were normalh^ found in "May. In two or three weeks, 

 the adults emerged. They lie naked in the extremity of the burrow. 

 Length, 13 mm., width, 3 mm.; color, uniformh^ white, at first, later 

 changing to light yellow. The compound ej^es are dark-brown quad- 

 rangular areas on the ventral part of the head, close to the base of the 

 antennae. On the anterior portion of the head, between the base of 

 the antennae, are two sets of hairs, each set containing two hairs, one 

 hair usualh^ twice the length of the other. The distal half of the 

 mandibles are light brown in color and the entire area between the 

 mandibles is filled with, the sub-triangular clypeus. 



The antennae are quite prominent, extending to the base of the 

 hind femora when the}- curve forward to the base of the front legs. 



Adult 



Like all the species of Oberea, this is a slender form; length, 12-14 

 mm., width, 1.5-2 mm. The head, antennae, and middle and outer 

 and inner margins of the elytra are black. The central area of the 

 elytiSi, running three-quarters of its length, is usually orange in color. 

 The head, elytiSi, and thorax are feebh^ punctate, the pits on the 

 elytra being the more conspicuous. A dense gray pubescence is found 

 over all these regions. The thorax is yellow or orange in color, and 

 on the dorsal region has three black callosities. The smaller median 

 one lies in front of the scutum, while the two larger spots lie one 

 on each side of the median line. 



One of the distinguishing characters of the species is the banding of 

 the ventral segments. The thoracic segments are black with perhaps 

 the exception of the part of the metathorax where the yellow legs are 

 attached. The first segment of the abdomen is j^ellow, the next two 

 are black, the following segment is A^ellow, while the caudal segment 

 is black. A slight overlapping of the segment areas b}^ the yellow 

 bands is often noticed. The yellow portions on some specimens are 

 often replaced by dark orange. The proximal portions of the legs are 

 yellow or orange, the tips being dark brown or black. 



Parasitism 



As mentioned previously in the paper, many larvae perished while 

 in the burrow toward the cut end of the twig, due possibly to some 

 predaceous parasite. Many times in later stages, the burrow was 

 found empt}' with evidences that the larvae had been attacked by 



