LEPIDOPTERA OF NEW YORK AND NEIGHBORING STATES 583 



II. Ventral edge of valve with a> strong chitinized ridge, ending in a heavy spine; 



uncus broad, membranous, and hoodlike, but pointed; larvce apparently roo+ 

 feeders (Scoparia). 



2. S. penumbralis Dyar (fig. 357). Dull powdery gray (black on clay color), the 

 markings formed of the black powdering, diffuse, and evanescent under a lens; ante- 

 medial line pale, followed by dark, transverse, well out; postmedial line slightly 

 dentate on veins, excurved opposite lo\ver angle of cell; followed by a distinct 

 pale line, and a vague darker subterminal shade. Reniform a blackish X; orbicular 

 and claviform obsolete; blackish terminal dots, alternating with pale ones. 

 12-15 mm. 



June. 



Ontario to Pennsylvania. New York: North Creek, Rock City, Vandalia, McLean. 



III. Valve simple with a slight and slender ventral thickening, usually ending in a 

 less prominent spine, somewhat trapezoidal; uncus membranous, hoodlike, with 

 a blunt, and sometimes bifid apex; larvce moss-feeders (FAidoria Chapman). 



3. S. basalis Walker (figs. 353, 358). Powdery ash gray, on white; a blackish 

 basal dash; a strongly excurved antemedial line, with a pale shade before it, and 

 an irregularly developed darker shade beyond; claviform a black dash; orbicular a 

 short bar, separated from the antemedial line by its length; reniform a black cross, 

 sometimes imperfect, more or less shaded with brown ; postmedial line strongly and 

 sharply excurved opposite lower angle of cell, almost angled, pale, defined with 

 gray shades, especially on outer side at costa and inner margin; a gray shade along 

 middle of outer margin. Hind wing grayish white. Male with a short small valve, 

 convex on its dorsal side, with a weak, but distinct, spine on its ventral edge, rather 

 near its apex than its base (% mm. from apex). 11-16 mm. 



June to August. 



Generally distributed; common on tree trunks. New York: Niagara Falls, Lewis- 

 ton, Hemlock Lake, Rock City (Cattaraugus County), Otto, Crosby, Ithaca, Big 

 Indian Valley, Rhinebeck, New Windsor, New York City. I have also unverified 

 records from Essex County, Old Forge, Newport, Fentons (Lewis County), Buffalo, 

 Wells, and Albany, most of which are doubtless correct. 



4. S. cinereomedia Dyar (fig. 359). Powdery ash gray without any brown; the 

 median area, except beyond the reniform, more or less distinctly paler, sometimes 

 white. Lines as in 8. basalis, the postmedial perhaps a little less irregular. Ante- 

 medial line with its dark outer shade more nearly continuous; the dash in the fold 

 rarely distinct. Male with valve much longer than in S. basalis; concave on the 

 upper edge, with the spine weaker, and much further from the apex (nearly % mm). 

 15 mm. 



Found with 8. basalis, in July. 



New York and western Pennsylvania. New York : Otto, Ithaca. 



5. S. strigalis Dyar. Light powdery gray, much like male basalis; orbicular, 

 reniform, and claviform nearly equally large, heavy black bars, the orbicular 

 touching the obscure antemedial line, and the reniform a little thicker; a series 

 of black terminal bars, those at apex, opposite cell, and in fold, much heavier; 

 basal dash long. Genitalia not studied. 10-17 mm. 



July and August. 



Ontario and southern New Hampshire to Georgia. New York: Ithaca. 



6. S. lugubralis Walker (fig. 360). Very close to 8. basalis. Outer dark shade 

 of antemedial line continuous, and entirely separate from the rounded claviform 

 spot. Frequently a black bar just above Cu, connecting orbicular and reniform. 

 Postmedial line less deeply angled, but just as sharply. Male with valves long 

 and slender, without a distinct spine on ventral edge. 18 mm. 



June to early August. 



Bretton Woods, New Hampshire; Canada; Western States. 



