315 



Platyptilia pasadencnsis Grinnell, Can. Ent. XL, 317, 1908. 

 Meyrick, Wagner's Lep. Cat. pars 17, 13, 1913. 

 Barnes & McDunnough, Check List 150, 1917. 



In general brownish-gray, with faint transverse whitish lines on the pri- 

 maries, producing a wavy appearance. Head and thorax with scales pale edged, 

 the latter with a velvety black area behind, followed by a broad white margin. 

 Abdomen with some whitish scales. Antennae slightly paler below than above, 

 palpi moderate, oblique, exceeding the short blunt frontal tuft. Legs whitish, 

 with dark bands and stripes on fore and mid tibiae. Hind tibiae entirely dark. 

 All tarsi with dark annuli. 



Primaries narrow, both lobes crossed near outer margin by a slender, 

 wavy white line. The terminal area is marked with white scales. Transverse 

 line preceded by a dark triangle whose base rests on the costa, and followed 

 by a dark costal dot ; in second lobe preceded by a dark shade. A dark trans- 

 verse line before the cleft is connected to a dark costal triangle, and the space 

 between this and the similar outer mark is pale brownish buff. This pale mark, 

 roughly triangular, is a convenient distinguishing feature of the species. From 

 the apex of the outer dark triangle a dark line usually projects into the pale 

 area. Outer margin crenulate. Fringes greyish, with scattered black scales 

 in cleft and along inner margin, and a basal row of similar scales on the outer 

 margin. Secondaries grey-brown, fringes concolorous, with scattered black 

 scales on inner margin of third feather and a tooth of black scales at two- 

 thirds from base, usually more or less triangular, but variable. Expanse 

 16-19 mm. 



The male genitalia are quite different from those of the species 

 to which marmarodaciyla seems most closely related. The narrovir, 

 regular claspers can readily be examined in situ under a binocular. 



Distribution: Colo., S. Cal., Ariz., N. M. We have a series of 

 over one hundred specimens from San Diego, Cal., taken from late 

 in April to early June, and late in October. From other California 

 localities we have specimens taken in March, June, July and August; 

 from Arizona, April and July, and from Colorado in July. New 

 Mexico is one of the type localities. 



Of the three cotypes submitted to us in the National Museum 

 material, two from Las Vegas Hot Springs, N. M., Aug., were found 

 to represent our conception of this species. The third, from the Santa 

 Rita Mts., Ariz., May 26, 1898, belongs to crcmdata B. & McD., and 

 bears our label to that effect. The type S of pasadencnsis Grinnell 

 from Pasadena, Cal., July, proved to be easily referable to this species. 



We know nothing of the early stages, except that a label was 

 pinned into the National Museum series saying that the species is 



