LEPEDOPTERA OF NEW YORK AND NEIGHBORING STATES 221 



upper epidermis (which is turned down by a twist in the leaf), 3 or 4 cm. long, 

 gray for the most part, but with a wrinkled central stripe which remains green. 

 Larva wintering in the mine, sometimes moving to a new leaf in the spring. 

 Pupa in a very slight cocoon, stout, ovate, with four rather prominent mesothoracic 

 tubercles; smooth and shining. Moth in May to July and September. 

 Xew York to Ohio. Xew York: Peru, Perry, Ithaca. 



2. A. brachyelytrifoliella Clemens. Dark grayish brown, apical half of fore 

 wing black-brown, base light; oblique white streaks from costa a third way, and 

 two-thirds way out, the second almost reaching one which rises up from the 

 dorsal margin. A white stripe along base of costa, joining the first transverse 

 streak; two white streaks edged with black in costal fringe; a black apical spot, 

 and a white dot in dorsal fringe. Head in front, and palpi, silver white. 6 mm. 



Larva mining a grass, Brachyelytrum aristatum, early in July; mine at first 

 linear, then a blotch taking up most of the leaf. Pupa external, on a slight 

 web. Imago emerging in late July. 



Easton, Pennsylvania. 



3. A. enitescens Braun. Head and thorax metallic -leaden, the head nearly black; 

 antennae grayish black throughout; rest of fore wing dark brown. A silvery or 

 golden fascia a third way out, oblique inward on costal half, broader and erect 

 on dorsal half; two spots opposite each other at two-thirds, and a spot at apex 

 of membrane; base of inner margin sometimes with silvery or golden scales. 

 Metallic markings with some reddish or purple luster. Fringes and upper side 

 of abdomen dark gray; hind wing dark brown. 7-7% mm. 



Larva on Scirpits atrovirens (bulrush), forming a long transparent mine in a 

 basal leaf, extending from the base upward; wintering in the mine, and moving 

 to a second leaf after some feeding in the spring. Larva yellow with a pair 

 of ill-defined dark patches on posterior part of prothorax; Pupa in a light flat 

 cocoon of rhomboidal meshes. Pupa stout, with dorsum of abdomen flattened, and 

 with a subdorsal series of short blunt spines; thorax with three or four prom- 

 inent lateral tubercles. Moths in May and early June. 



The larva feeds only at night, retiring by day to the base of the leaf, some- 

 times beneath the water level. 



Cincinnati, Ohio. 



4. A. madarella Clemens. Similar to A. enitescens; head paler, tips of antennae 

 white, base of fore wing more golden and legs paler. 8 mm. (Cosmiotes Clemens). 



Larva on Carex, especially C. pubescens and cristata, and on Scirpus; mines 

 similar to those of A. enitescens, several being made by a single larva, the 

 larva with the same habit of retiring to the base of the mine by day. Larva 

 pale green or whitish, with a pair of prominent, dark brown spots, sometimes 

 L-shaped, on the prothorax. Cocoon and pupa similar to A. enitescens, pupa 

 broader with rougher thorax, and a beaded ridge with a broad sinus at its 

 middle, across the vertex. Moth in late May and June, rarely flying into July. 



Pennsylvania and Ohio; abundant in Ohio. 



5. A. argentosa Braun. Thorax deep golden brown, shading into metallic gray 

 behind; head also metallic gray, antennae wholly black-brown. Fore wing nearly 

 black, with a fascia and costal and dorsal streaks as in A. enitescens; but bluish- 

 silvery, the fascia produced outward a little on the inner margin, and the costal 

 streak curving out at its lower end to the apex of the membrane, where it may 

 be broadened, and sometimes meets the dorsal streak. Legs silvery gray, middle 

 tibiae and all tarsi dark brown, with tips of segments silvery. 7-7% mm. 



Larva in a narrow-leaved Carex, mine extending down from the tip of a leaf, 

 lying nearer the upper epidermis, the larva consuming most of the parenchyma. 

 Epidermis slightly wrinkled at point of exit of larva, which is not always at 

 the extreme base of the mine. Pupa in a slight cocoon of very irregular meshes; 

 stout, ovate, shining, and chitinous, with rows of minute tubercles on dorsum 



