Notes on Coleophora, ivith Descriptions of Two Nezv Species 



163 



Case of C.fagicosticella, 



x-i; 



The entire inflorescence, including seed capsule, perianth and 

 bractlets, is used in constructing the case, and surrounds it ex- 

 cept at the mouth and apex. That portion 

 of the case immediately behind the mouth 

 (the bent neck at the anterior end, of which 

 Chambers speaks), about .5 mm. in length, 

 is spun of brownish yellow silk. The bract- 

 lets at the base of the perianth surround the 

 silken inner case immediately behind this 

 bent neck. Pointing backward are the six 

 sharp teeth of the perinath. Projecting beyond the split apex of 

 the ovary of the flower is the three-valved apex of the silken inner 

 case. Length of case : 5 mm. 



This is probably the commonest species of the four, but the 

 cases are not as easily detected amongst the clusters of seed cap- 

 sules upon which the larva feeds. In the spring the cases are 

 very plentiful on tree trunks in the neighborhood of the food plant. 

 The dates of emergence of a series of twenty-five imagoes extend 

 from May 22d to June 21st. 



Coleophora unicolorella Chambers. 



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

 X, 111, 1878; Dyar, List, N. A. Lep., No. 6050, 1902. 



The case of this species is spun entirely of ocherous or grayish 

 silk with numerous tiny specks of yellow- 

 ish or brown excrement adhering to it. 

 The case is short, cylindrical, the diameter 

 great in proportion to its length, with the 

 anterior end narrower and bent down- 

 ward toward the mouth, the posterior end 

 capped with a flat, broad pyramid whose faces form the three 

 valves of the apex. Length of case : 4.5-5 mm. The imagoes 

 in my collection appeared June 19th. 



Case of C. unicolorella, X 4; 



59 



