318 



ENTOMOLOGICAL NEWS. 



[Nov., 'o6 



we have examined red and silver maples, but have not found 



them attacked. The sugar maple is by far the most important 



host. 



Description. 



Egg. — The egg is colorless, more than five times as long as 

 thick (length 975 p. or about 1 mm.; thickness 186 /*), falcate 

 or curved, with ends rather blunt and rounded. One end is 

 slightly thicker than the other, but the egg is nearly uniform 

 in thickness, and is shown in Fig. 3. 



Larva. — The larva, when full-grown, is about 8 mm. or 

 one-third of an inch in length and about 1.5 mm. or one-six- 

 teenth of an inch in thickness. Head dark-yellow or light- 

 brown, with mandibles black or dark -brown. Body and legs 

 uniformly buff or straw-yellow, lighter than the head. Spiracles 

 dark. See Fig. 1. 



EGG AND LARVA OF MAPLE LEAF-STEM BORER. 

 1. Full grown larva. 2. Head of same. 3. Egg. All greatly enlarged. 



Pupa. — The pupa case is an earthen cell about 5 mm. long, 

 and greatly resembling that of the common currant worm. 



Adult. — Female; length from front of head to tip of abdo- 

 men, 4 mm. Tip of antennae to tip of abdomen, 6 mm. From 

 tip to tip of forewings, 10 mm. 



Head and thorax shining black above. Antennae black. 

 Abdomen and under side of thorax, including legs, honey-yel- 

 low. Tip of abdomen dark. 



The male is unknown. 



