THE PECAN CIGAR CASE-BEARER. 83 



Tlie larra and larval cases. — The case in which the larva passes the 

 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 which it 

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

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

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

 from a hollowed portion 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. mde, 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 hglit brown, with cervical 

 sliield oval, shining black, divided along center by a hght browTi line. 

 The tliird segment of the bod}-^ has a small black shield like the 

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

 finely pimctured and bears scattered, short, wliite hairs. The legs 

 are light brown, wliile the prolegs 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, h, c. 



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

 about 5.5 mm. long and 1 mm. wdde, cylindrical, having nearly the 

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

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

 The leg cases extend beyond the tip of the abdomen. 



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

 rear the advdt. His original description is as follows: 



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

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

 and third rings. 



The case is small, dark brownish, and in form is a flattened simple 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 pupae during Ma}' and Jime and at that 

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

 emerged from the pupae 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 hind wings and flat over the abdomen, while the antenna? 

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

 seem to rest among the leaves. 



