162 Cincinnati Society of Natural History 



COLEOPHORA CRATIPENNELLA ClEMENS. 



Coleo.phora cratipennella Clemens, Proc. Ent. Soc. Phil, III, 

 506, 1864 ; Tin. No. Am., 258, 1872 ; Busck, Proc. Ent Soc. Wash., 

 V, 219, 1903; Dyar, List N. A. Lep., No. 6012, 1902. 



Syn. gigantella Chambers, Can. Ent., VI, 128, 1874; X, 110, 

 1878; Dyar, List N. A. Lep., No. 6019, 1902. 



The case of this species is spun entirely of silk. The early case 



is whitish, thin and flimsy, much flat- 

 tened, especially toward the apex, 

 which is two-valved. The case of the 

 mature larva is sub-cylindrical, ta- 

 pering a little toward the mouth and 

 apex, but expanding at the extreme 



caseofc./.>.««.//«,uX4 ^P^^' ^^^^^^^ ^^ couspicuously thrcc- 



valved. The general color is grayish 

 ocherous, shading to a more reddish color at the apex. Length 

 of case : 8 mm. Larvse may be found from the end of June to 

 the first part of August, when they crawl oflf, often attaching 

 themselves to trunks of trees, where they are easily collected in the 

 spring. Imagoes appear in May and the early part of June, simul- 

 taneously with the first blooming of the rush, occasionally later. 



There is more variation in color than either Clemens or Cham- 

 bers has described. The color of the streaks varies from pale 

 ocherous to fuscous ; in the latter case the general aspect of the 

 insect is gray. As a rule, the paler specimens are females. The 

 annulations of the antennae of these pale specimens are often 

 indistinct. 



The expanse of Clemens' type, given by Mr. Busck, is 14 mm. ; 

 this agrees fairly well with the expanse given by Chambers in his 

 original description of C. gigantella (>^ inch). The average size 

 of my specimens is 14.5 mm. 



Coleophora fagicosticella Chambers. 



Coleophora fagicosticella Chambers, Can. Ent., VI, 129, 1874 ; 

 X, 111, 1878; Dyar, List N. A. Lep., No. 6017, 1902. 



58 



