LEPIDOPTERA OF NEW YORK AND NEIGHBORING STATES 255 



present; male antennae bipectinate, without peeten on scape. Larva a case- 

 bearer on evergreens, with six setae on prolegs; flattened, widest at first segment 

 of abdomen; setae iii of spiracle-bearing segments with a double annular tubercle, 

 apparently movable. Pupa in the cocoon. 



1. P. tsugensis Kearfott. Silvery white, vemed with gray; with a narrow ter- 

 minal gray shade immediately preceded by a blackish line. Hind wing yellowish 

 white. 21-24 mm. 



Larva on Tsuga ( Japanese hemlock ) ; cream- white, speckled with pink, with 

 blackish head and cervical shield; in a case covered with needles and frass. 



New Jersey. Introduced from Japan ( ?) 



Family 21. 



Moderately small moths, sometimes minute. Head typically 

 smoothly scaled, clothed with long scales curving forward and down, 

 and sometimes ruffled. Labial palpi normally as described for the 

 superfamily; second joint often with a triangular tuft. The third 

 joint rudimentary in male of Anarsia only. Antennas as in (Ecophor- 

 idae; very rarely with peeten (Sitotroga, Symmoca ?). Fore wing 

 narrow, with rounded, rarely caudate (fig. 158) outer margin. R g 

 running to costa, stalked, or, rarely, completely fused with R 4 ; R 3 

 usually free ; M! from near upper angle of cell or stalked with R 5 ; Ci^ 

 and Cu 2 often stalked, never very widely separated; the other veins 

 mostly free, and hardly ever with more than one vein lost. M 2 arising 

 nearer Cu-stem than R-stem. 1st A absent (except the extreme tip 

 in some exotic Symmocas) ; 2d A strongly forked at base. Hind 

 wing more or less trapezoidal, the outer margin more sharply bent 

 over M 3 and Ci^ and often concave above, or with projecting apex; 

 rarely bifid; lanceolate in some Helices. Sc and R connected by a 

 well-developed R x near base ; "R^ and base of R s both lost in Helice ; 

 R and M t approximate at origin or stalked, except in a few genera 

 with markedly concave outer margin; M 2 various; M 3 and Cu^ connate 

 or stalked, rarely separate. 1st A lost, and 3d A very weak. M lf or 

 M 2 , or both, sometimes disappearing in forms with concave outer 

 margin; and M 3 rarely fused with Ci^. 



Larva (fig. 174) typical of the superfamily, as a rule; coxse often a 

 little separated, but by less than their width ; adfrontals reaching nearly 

 or quite to vertex ; and front two-thirds as far, or ending in an attenu- 

 ated point; prolegs almost always with biordinal hooks, either in an 

 ellipse or in two transverse bands; in the latter case with two groups 

 on anals. Second, third, and fourth ocelli not distinctly grouped. Pro- 

 legs lost and true legs rudimentary in a few genera. Pupa with clypeal 

 suture complete and usually straight; labial palpi concealed, or show- 

 ing a small triangle next to labrum; femora concealed. Antennae con- 

 tiguous for some distance behind tongue, and then again diverging 

 before apex; maxillary palpi present and usually large, reaching from 



