LARV-E OF MOTHS FROM COLORADO— DYAR. ^ 405 



Family GELECHIID^. 



GNORIMOCHEMA COQUILLETTELLA Busck. 



Zarva.—nead rounded, elongate, vertex under joint i>, clypeu.s tri- 

 angular, high, not reaching vertex; ocelli black, jaws brown; width 

 0. S mm. Body somewhat flattened, incisures distinct, segments faintly 

 3-annulate; cervical shield reduced, the front part membranous; anal 

 plate large, shining. Skin transversely wrinkled. Tubercles moder- 

 ate, shining, but weakly cornifled, i slightly dorsad to ii, iv + v; ia and 

 ib nearly separate, iia and lib confluent, iv + v. On abdomen the 

 upper seta of iv + v is anterior and smaller. Feet normal, short, the 

 crochets in a small, complete circle, all pale. Seta; moderate, pale. 

 Color sordid yellowish or whitish, head pale testaceous, sutures brown, 

 ocelli black. 



The larva^ form false galls on the terminal twigs of Blgehw/a. The 

 terminal leaves of a young growing tip become united into a fusiform 

 gall-like enlargement, forming a tight box. Every leaf or part of one 

 that touches the inside of the cavity of the box is swollen in that part 

 of its surface; the swollen parts become yellowish and the leaves adhere 

 together, forming the four or Ave sided box. The tip of the stem 

 bearing the box is recurved. Larva within the hollow, destroying the 

 Inid. Frass in the pointed tip. These curious formations, looking 

 like large flower buds, were found commonly in a few places in the 

 Platte Canyon and on the prairie near Denver. When occurring at 

 all, they were generally abundant. They were not found, however, 

 until too late in the season to be successful in rearing the moths. Still, 

 they seem obviously to be the same as the species described by Mr. 

 Busck . . 



As Mr. Busck's paper on the Gelechiida?, in which his description 

 would naturally appear, is delayed, I have asked him to furnish the 

 description in advance, which he has kindly done. 1 append it. 

 GNORIMOSCHEMA COQUILLETTELLA Busck, new species. 



Antenna- dark brown with narrow silvery wliite annulation^^. Labial palpi of 

 typical Gnonmoschema form; second joint whitish sprinkled with brown scales and 

 with a black bar on the outside; terminal joint black with a white annulation around 

 the middle. Face whitish; head and thorax whitish, heavily overlaid with dark 

 fuscous. Forewings with basal fifth light yellowish brown, which color is continued 

 outward and downward in a tapering curved streak along dorsal edge to beyond 

 middle of the wing. The ground color in the rest of the wing is pale bluish white 

 with each scale tipped with black. Adjoining the basal fawn-colored area is a semi- 

 • ircular costal region, heavily overlaid with dark fuscous, and outside this is another 

 similar costal dark area not so well defined. In the first of these dark semicircles, 

 on the middle of the ceil, is a dark reddish-brown dot, surrounded by a few fawn- 

 colored scales, and below the second costal .semicircle, at the end of the cell, is 

 another similarly edged spot, A few dark fuscous scales are sprinkled irregularly 



