LEPIDOPTERA OF NEW YORK AND NEIGHBORING STATES 591 



2. Fore wing yellow or brown. 



3. Fore wing with a terminal dark line 4. alleni. 



3. Fore wing with dark terminal dots 5. zeacolella. 



I. Sc and Rj merely approximate. 



1. D comptulalis Hulst. Male dull brown, with grayer margin; a diffuse pale 

 crenate and broken antemedial line; a finely dentate postmedial line roughly 

 parallel to outer margin, toothed inward on A, and running in to costa, and a 

 pale discal spot. Hind wing fuscous. Female light clay color, shaded lightly 

 with brownish, leaving the whole cell pale, but with dark patches in the base and 

 middle of the fold, and near the middle of the inner margin. Discal dot dark. 

 A diffuse pale subterminal line, preceded by a well-marked dark band, defined on 

 the outer side only. A slight, dark terminal shade. Hind wing slightly paler, 

 with a corresponding terminal shade. 25mm. ( Chllo auct. ) 



Michigan to Missouri and west. New York: Ithaca. 



2. D. forbesellus Fernald. Similar to D. comptulalis. Fore wing with more or 

 less white scaling on disc, setting off the black discal dot; a streak of white scales 

 in fold, interrupted by black bars near base and middle of fold; subterminal mark- 

 ings and terminal dots obscure. Hind wing white, in the male light fuscous 

 apically, and with a distinct dark terminal line; in the female almost immaculate. 

 Fore wings in some specimens much paler, light ochre yellow. 23-38 mm. 

 (Chile auct.) 



Larva a borer in Scirpus. 



Illinois ; Missouri ; New York : Buffalo. 



3. D. idalis Fernald. Fore wing gray, obscurely or not striate, with traces of 

 markings or none; hind wing white in female, pale gray in male. 25-34 mm. 



New Jersey; Georgia. 



4. D. alleni Fernald. Clay-color to brown, finely dark-streaked on and between 

 the veins, the venular streaks even in width. A distinct discal dot. Terminal line 

 obsolescent, but not breaking into dots. Inner margin sometimes contrastingly 

 pale. Hind wing fuscous outwardly. 30 mm. 



Maine. New York: Newport, Big Indian Valley. 



II. Sc and Rj anastomosing. 



5. D. zeacolella Dyar. Clay color, finely streaked with dark on and between the 

 veins; the venular streaks enlarging to form a very oblique series of postmedial 

 dashes, and a subterminal series which is very oblique below; a dot at lower 

 angle of cell, and slight terminal dots in interspaces; slight dark shades in upper 

 part of cell, below cell, and extending obliquely to apex. Female with markings 

 nearly lost. Hind wing white. 25-30 mm. (saccharalis auct., not Fabricius.) 



Larva a borer in corn (not normally in cane) ; sometimes injurious. 

 Virginia and south. 



63. CHILO Zincken 



Similar to Diatrsea. Ocelli prominent, front always conical, R, closely approxi- 

 mate to Sc for a distance, but free. Larvae borers in water plants. 



1. C. plejadellus Zincken. Whitish yellow; fringe, a broken lino before it. a short, 

 irregular, oblique median band, and scattered scales on disc, all lead-colored or 

 silvery; black terminal dots. Hind wing white. 22-32 mm. 



July. 



Larva a borer in stems of rice, and presumably other swamp grasses: yellowish 

 white, head dark brown, cervical shield light brown, body with four vague purplish 

 stripes. Pupa with conical front. 



New York to Wisconsin and Georgia. New York: Ithaca. 



