June, 1902.] KeaRFOTT : On NoRTH AMERICAN ChOREUTES. 114 



Hind wings : Light fuscous, veins darker. A whitisli subterminal dash. Fringe 

 fuscous, shadowed by two pale marginal lines, outer edge paler. 



Under side fore wing : Pale fuscous ; white marginal line from costa to hind 

 angle, paralleled by an inner whitish line. A white spot on costa at inner third, 

 another on hind margin at inner third. Under side hind wing : Pale fuscous, a paler 

 marginal line becoming white and broader at apex, nearly paralleled by a broader white 

 band, inside of this is a white dash. Abdomen brown, a band of whitish scales at 

 posterior edge of each segment. Legs so thickly covered with white scales that ground 

 color is almost hidden ; except tarsi, pale golden beneath and an alternate brown and 

 white ring on each jomt above. Expanse, 7.5 to 8.5 mm. 



Described from eight specimens. St. Louis, Mo. (MissMurtfeldt), 

 Hazleton, Pa. (Dr. Dietz), Chicago, Ills. (Chittenden). 



Type, U. S. Nat. Mus., No. 6264; co-type, Collections, Murt- 

 feldt, Dietz, Kearfott. 



The following description of larva and habits by Miss Murtfeldt is 

 quoted from Professor Fernald's paper. Can. Ent., XXXII, p. 241 : 



"The larva is found late in June (in Missouri), and again in October, mining 

 and webbing the leaves of Gnaphaliitm polycephalum. When small it works chiefly 

 between the cuticles of the leaves, but later feeds externally, .spinning quantities of 

 somewhat viscid web, among which the black powdery frass is profusely scattered. 



"The mature larva is 6 mm. in length by 1. 5 in diameter across middle seg- 

 ments, from which it tapers very slightly in both directions ; form cylindrical, sub- 

 moniliform. Color translucent, whitish green, immaculate. Head oblique, same 

 color as body, but horny and polished. Collar inconspicuous. Legs concolorous 

 with general surface. Before the first transformation it becomes gregarious, the larvae 

 spinning their dense white sticky cocoons, something to the number of a dozen in 

 close proximity in the general web. 



" Pupa pale golden brown, 4 mm. in length, and rather stout, with no especially 

 marked characters. Imagines in seven or eight days after pupation. 



" In central Missouri the species is rather rare, and, within the limits of my ob- 

 servation, has only occurred three times within the last dozen years, although careful 

 watch for it has been maintained upon its food plant. So far it has not been found 

 upon any Gnaphaliuin or Antenuaria, except G. polycephalioii. I have never taken 

 this species at light." 



Choreutis silphiella Grote. 



1881. Choreutis siiphiella Grote, Papilio, Vol. I, p. 40. 



1882. Choreutis silphiella Walsingham, Trans. Am. Ent. Soc, X, 167. 

 1886. Chakcela ^etnmalis HuLST, Trans. Am. Ent. Soc, XIII, 148. 

 1890. Choreutis silphiella Dyar, Can. Ent., Vol. XXXII, p. 85. 

 1890. Choreutis silphiella Fkrnald, Can. Ent., Vol. XXXII, p. 241. 



Original description : 



"Thorax orange, with a metallic stripe on the tegular. Head olivaceous. Pec- 

 tus and basal joint of palpi whitish. Fore wings with the base orange, to a dusky, 

 inwardly oblique, tran.sverse shade line. A longitudinal metallic stripe before the 



