THE PECAN CIGAR CASE-BEARER. 83 



The larva and larval cases. — The case in wliich the larva passes tlie 

 winter is small, 3-3.5 mm. long, very flat, cylinderlike, and by the 

 end of winter has the same color as the twigs or bark on wliich it 

 rests. In the spring the larva is found in a case that is considerably 

 larger. This is 5-7 mm. long, cylindrical, flattened vertically at the 

 upper end, and slightly rounded at the lower. This case is made 

 from a hollowed })ortion of leaf and so shows the entire leaf structure. 

 It becomes reddish brown in color, and resembles a minute cigar. 



The mature larva is about 5.5 mm. long and 1 mm. wide, the 

 cylindrical body having well-marked segments. The head is one- 

 half as wide as the body, hemispherical, flattened, black in color, 

 with the triangle reddish. The body is light brown, with cervical 

 shield oval, shining black, divided along center by a light brown line. 

 The tliird segment of the body has a small black shield like the 

 cervical, the anal plate shining black. The surface of the body is 

 finely punctured and bears scattered, short, white hairs. The legs 

 are light brown, while the prologs are wanting or very small, marked 

 by minute elevations, except the anal pair, which are large and 

 functional.. The nearly mature larva is well illustrated in its case in 

 figure 24, 6, c. 



The pupa. — The pupa is formed within the larval case, and is 

 about 5.5 mm. long and 1 mm. wdde, c^dindrical, having nearly the 

 same diameter throughout the entire length. The head and eyes are 

 blackish, while the remainder of the pupa is light yellowish-brown. 

 The leg cases extend beyond the tip of the abdomen. 



Clemens described this species from the larval case, but did not 

 rear the adult. His original description is as follows: 



1. C. carysefoliella. The larva mines the leaves of hickory in September and 

 October. The head and body is [arel reddish-brown, somewhat darker on the second 

 and third rings. 



The case is small, dark brownish, and in form is a flattened simjile cylinder. The 

 larva feeds only in small rectangular patches, of which there are usually several in 

 the same leaf. The case is fixed to the under surface and the larva feeds in one patch 

 until it is compelled to remove its entire body from its case, and then removes to 

 another part of the leaf to form a new mine. 



HABITS OF THE ADULT. 



The moths emerge from the ])upa3 dm-ing May and June and at that 

 time may be found among the pecan trees. When only recently 

 emerged from the pupjE they rest either on the pupal cases or on the 

 leaves or twigs of the host plant, with the fore wings folded back 

 over the liind wings and flat over the abdomen, while the antennie 

 are held closely together and directed forward. During the day they 

 seem to rest among the leaves. 



