LEPIDOPTERA OF NEW YORK AND NEIGHBORING STATES 607 



2. Head, thorax, and base of wings powdery gray. 



3. Thorax and base of wings brown; black scaling of wing with purple 



iridescence 7. robustella. 



3. Thorax and base paler luteous or gray; purple iridescence, when present, 



on the paler scales of outer part of wing. 

 4. Ante- and postmedial lines both more or less diffuse; the ground 



almost evenly powdery gray 1. asperatella. 



4. Postmedial line clean-cut, black, similar to the outer antemedial line 



which is followed by a whitish shade 3. melanogrammos. 



4. Postmedial line more diffuse, less contrasting than the outer ante- 

 medial, which is followed by a whitish shade 2. subcanalis. 



1. T. asperatella Clemens. Rather even powdery gray (black on white). Outer 

 half of wing sometimes distinctly paler, especially in female; tufts small, well 

 contrasted, black; antemedial line doubled, darker gray, outwardly oblique, inter- 

 rupted in cell by the translucent area in male; postmedial irregularly sinuous, 

 denticulate, followed by a paler shade, inconspicuous. Process on antennae longer 

 than scape; normal; plume variable, yellow or blackish. 20-25 mm. 



Larva green, granulated with yellow; on oak, maple, elm, and beech. Moth in 

 June and July. 



Generally distributed. New York: Rock City (Cattaraugus County), Ithaca, 

 New Windsor (Morton). 



In var. nephelotella Hulst ( clemensalis Dyar ) , the thorax and base of wings 

 is pale and pinkish, almost as in platanella, but the darker, rather than paler, 

 outer part of the wing and the narrower wing will distinguish it. Var. expandens 

 Walker is transitional. 



2. T. subcanalis Walker. Similar to the preceding species, antemedial line con- 

 trasting, blackish, preceded by a heavy blackish shade covering the tufts and the 

 first antemedial line. Plume blackish. 22 mm. (militella Hulst, not Zeller. ) 



Illinois to Texas. 



This is probably merely a variety of T. asperatella. 



3. T. melanogrammos Zeller. Plume variable in color. Ground of thorax and 

 base and outer part of wing dull gray, somewhat suffused with reddish and 

 dusted with black; of median area white, dusted with black. Antemedial line 

 double, black, white-filled, contrasting, a little irregular and a little farther out 

 on inner margin; interrupted by the translucent patch in the cell of the male. 

 Postmedial similar and equally distinct, its outer line suffusing into the gray 

 outer region; somewhat sinuous and a little irregular, but not dentate; ante- 

 medial tufts black-tipped; medial tuf^ts white, with some black scales at end 

 of cell. 20 mm. 



Larva on shrubby Leguminosse ( Gleditschia, Prosopis). 



New Jersey, south and west. New York: New Windsor (Morton). 



In the typical form, from the Southwest, the contrast between the dark base 

 and pale median area is not striking, only the antemedial space being distinctly 

 pale. Our specimens are variety diluculella Grote (talleolalis Hulst). 



4. T. militella Zeller. Wings broad; plume black. Head, thorax, and base of 

 wings dull red-brown, with a pinkish tint, and much darker than the outer part, 

 which is also a little pinkish; many scales, especially on the under side, .crimson- 

 tipped. Antemedial line blackish, separated from base by a white line; straight 

 and erect; no nearer the base on the costa. Tufts mostly brown; median area 

 nearly white, especially toward the antemedial line; postmedial line a little 

 paler gray and more diffuse, somewhat sinuous, and, when most distinct, dentate 

 in the middle, followed with white, but with the outer part hardly darker and 

 not contrasting. Tufts in median area pale; no distinct discal dot. 22 mm. 

 (platanella Clemens.) 



Larva on Platanus. 



