40 

 A CHOREUTES ON SILPHIUM INTEGRIFOLIUM. 



By a. R. Grote. 



Mr. Coquillett has communicated to me specimens of a 

 Choreiites which he has reared, together with a description of the 

 larva. The species appears to be new and is considered by Pro- 

 fessor Fernald to be distinct from Prctiosana. 



Choreutes Silphiella, n. s. 



Thorax orange, with a metalHc stripe on the tegulae. Head 

 oh'vaceous. Pectus and basal joint of palpi whitish. Fore 

 wings with the base orange, to a dusky, inwardly oblique, trans- 

 verse shade line. A longitudinal metallic stripe before the shade 

 line below costa and some metallic scales below median vein. 

 Middle of the wing mottled, grayish, enclosing two metallic dis- 

 cal spots edged with black, superposed ; below them two faint 

 blackish lines to internal margin. Apical portion of the wing 

 taken up with a wide circle of dusky and orange scales enclosing 

 a series of metallic points edged with black. The space enclosed 

 by the circle, near the margin, is gray and mottled like the mid- 

 dle of the wing. The metallic spots have a violet or green reflec- 

 tion. The circle is twice cut by oblique orange stripes, over the 

 sub-costal nervules and over the median nervules, in opposing 

 positions. Edge of the wing dusky, fringes dark. Costal edge 

 with two white dots beneath, wide apart. Hind wing blackish ; be- 

 neath crossed by a white sub-terminal band, and another before the 

 middleof the wing. Length of forewing5 to 6 mm. Hab.\\X\ViO\s. 



The larva of this species is described by Mr. Coquillett as 

 follows : 



Choreutes Silphiella, Grote.— V>odiy thickest at the mid- 

 dle, tapering toward each end, pale green ; a dark colored dorsal 

 line ; piliferous spots and cervical shield green ; head small, nearly 

 horizontal, pale green, with a black dot on each side near the 

 jaws, and usually with a black dash on each side near the junc- 

 tion of the head with the first segment ; venter pale green, un- 

 marked ; i6 legs; length, 13 mm. Lives in communities on 

 SilpJmun Integrifolinvi in nests formed by fastening the terminal 

 leaves together with silken threads. Found June 19; imagoes 

 July 2. 



A distinct but allied species of Choreutes has been collected 

 Mr. Hy. Edwards in California {Sierra Nevada). 



DESCRIPTIONS OF GEOMETRID^E, CHIEFLY COL- 

 LECTED BY MR. PILATE. 

 By a. R. Grote, 

 Plagodis Floscularia, n. sp. 



$. Larger than the other species, and of a different color. 

 Fore-wings vivid lemon yellow, with the costa, at base, touched 



