82 MISCELLANEOUS EESULTS OF WORK OF BUREAU IX. 



the winter cases are still seen attached to sides of the buds. On the 

 other hand, if the trees develop their foliage before the larvae leave 

 hibernation in injurious numbers, the leaves are riddled by the larvae 

 as they come from the twigs and the wind soon whips them to pieces. 

 In this way, by feeding on the opening buds and young leaves in 

 great numbers, this insect may delay the trees from coming into foliage 

 for a period of from six to eight weeks. Because of this, } T oung trees 

 are held back during the most important period of their growth, and 

 older trees, owing to this extra demand for nourishment for building 

 leaves, probably have the crop of nuts for the year considerably 

 decreased. Plate V, figure 1, shows a pecan twig with the young 

 leaves ragged and largely destroyed by this insect, and Plate V, figure 

 2, shows the mines of the larvae and some of the case-bearers at work. 

 Plate VI is from a photograph of a pecan tree, taken May 6, 1909, 

 showing injury by this insect. Plate VII shows a tree not attacked 



by this insect, which had been in full 



foliage for at least four weeks. When 

 r^" P the writer left Orlando, June 13, the 



injured tree shown in Plate VI was still 



partly bare. 



DESCRIPTION. 



The adult. — Coleophora caryxfoliella 

 is one of the Microlepidoptera belonging 

 fig. 24.-The pecan cigar case-bearer (Coieo- to the family Elachistidse, characterized 



phora carysefoliella): a, Adult; 6, c, larvae W narrow, pointed willgS with long 



in cases. Greatly enlarged. (Original.) „ . ., . . mi n i, 



fringes on the inner margins. I lie adult 

 is a delicate little moth, ochreous in color, with a wing expanse of about 

 9 mm. The head is yellowish ochreous, with white scales over the 

 eyes, the palpi and base of the antennae the same color as the head, 

 and the rest of the antennae white ringed with brown. The body is 

 the same color as the head, while the fore wings are reddish ochreous 

 with costal margin white and fringe on inner border gray, and the 

 hind wings are gray or whitish. This moth is well illustrated in 

 figure 24 at a. 



Chambers described the adult as follows: 



The species is ochreous; the head and palpi pale or yellowish ochreous; the an- 

 tennas white, annulate with brown; fore wings reddish ochreous, darker towards the 

 apex, with the costal margin from base to cilia white. 



The ornamentation of the imago is nearer that of C. limosipennella than to any of 

 the other species figured in Nat. Hist. Tin. Al. ex. 4J lines. 



The egg. — The egg has not been observed by the author, but is 

 probably very similar to that of C. fietcherella as described by A. G. 

 Hammar. a 



United States Dept. Agr., Bur. Ent., Bui. 80, Pt. II, p. 37, June 30, 1909. 



