156 Psyche [October 



spring. So as to facilitate the emergence of the adult, the pupa 

 issues partly through the thin lower surface of the leaf. An in- 

 fested leaf may contain from one to twelve and possibly a few 

 more larvae, although twelve was the largest number taken from 

 a single leaf. The young larvse are yellowish-white, later becoming 

 yellowish-green when full grown at which time they are about 

 one-eighth of an inch in length. The pupae also are about 

 one-eighth of an inch long, light orange colored and quite active, 

 while the adults are slender midges with hyaline wings, orange 

 colored bodies and remarkably long legs and antennae and appear to 

 be fairly strong fliers considering their small size. 



Technical descriptions of both sexes and the larva together 

 with suggestions for control can be found in the Thirtieth Report 

 of the State Entomologist of New York by E. P. Felt and need 

 not be gone into here. Considering the damage which this midge 

 is capable of doing and the lack of really efficient remedies together 

 with the fact that even partly injured boxwoods are no longer 

 ornamental, it would appear that the prompt destruction of in- 

 fested plants before the adults emerge in the spring would be the 

 best plan to pursue. 



Explanation of Plate XIII. 



Fig. 1. Boxwood leaf with lower surface removed to show 

 larval mines. 



Fig. 2. Leaves showing galls and empty pupal cases of the 

 midges. 



Fig. 3. Leaf showing distribution of the eggs in the tissue, when 

 many females are forced to oviposit in a few leaves. 



Fig. 4. Egg. 



Fig. 5. Larva. 



Fig. 6. Pupa. 



Fig. 7. Female midge. 



Fig. 8. Male midge. 



