344 WILLIAM T. M. FORBES 



a little lower than Argyresthia but closely related to it. The wing-form makes it 

 look like a minute Cerostoma. 



1. A. incertella Clemens. Fore wing gray-brown, somewhat iridescent with red 

 bronze; with vague darker streaks and patches, especially one at middle of costa; 

 an oblique white streak extending up from inner margin near base, to about 

 middle of wing; hind wing pale. 12 mm. (Adela flamensella Dietz, not flammeu- 

 sella Chambers). 



April; July and August; October. L#rva tying and skeletonizing leaves of 

 smilax, or boring in bulbs of Lilium. Pupa in a lace cocoon, like those of the rest 

 of this series. 



New Hampshire to Kentucky; west to California. 



10. ARGYRESTHIA Hiibner 

 (With Blast ot ere Ratzeburg) 



Vertex rough-hairy, though less so than that of Tinea; front smooth-scaled; no 

 ocelli; antennae normal; the shaft with two nearly complete circles of scales to a 

 segment; pecten strong, sometimes almost an eye-cap. Labial palpi moderate and 

 porrect, or upturned nearly to vertex, smooth-scaled or a little roughened; maxil- 

 lary palpi obsolete; hind tibiae with spurs near middle, usually rather sharp edged 

 above, with some rough, bristly hair, which may also extend on the metatarsus, 

 but otherwise smooth-scaled. Fore wing lanceolate ( fig. 202 ) , with Sc short, 

 JR, arising from middle of cell or before; R 4 and R 5 typically free (stalked in 

 group Blastotere) ; M 2 and M 3 free, stalked or rarely united (annettella, rileiella) ; 

 accessory cell and usually base of M distinct; 1st A distinct; 2d A shortly forked 

 at base, long; a stigma on costa before R l5 as in many Yponomeutidae; hind wing 

 with costal cell abruptly narrowing before the middle; Sc ending at middle of wing 

 or before; M! and M 2 stalked, widely separate from R; M 3 and Cilj free, stalked, 

 or, in one western species, united; hind wing lanceolate, narrower than fore wing. 

 The imago differs from the typical Tineidae mainly in the lack of palpal bristles, 

 and in the fact that R 5 runs to outer margin, in both of which points it agrees 

 with the Acrolophinae. 



The larvae (fig. 210) bore in twigs, buds, and fruits, or occasionally are leaf- 

 miners; the cocoon is of white silk, often spun in the tunnel. The pupa is obtect, 

 with maxillary palpus reaching from antenna to the maxilla, which is extended 

 laterally to meet it; middle leg not reaching maxillary palpus; tongue short; 

 antennae reaching to tip of wings; cremaster unspecialized, with eight hooks and 

 setae. 



The moths of this genus rest with the head appressed to the substratum, and 

 the tail held up at a sharp angle. 



Key to the species 



1. Fore wing silvery and golden or bronze brown. 

 2. With definite markings. 



3. Ground wholly golden, with brown markings; head white. .10. alternatella. 

 3. Part of ground, at least, white. 



4. Disc of thorax golden; head more or less yellowish; fore wing silver 



with golden fasciae 1. goedartella. 



4. Head and thorax white. 



5. Markings outlined with dark brown ; median fascia broader on inner 



margin, rarely reaching costa 3. oreasella. 



5. Markings black-brown on silver 4. media. 



