322 William T. M. Forbes . 



3. M 1 free from R 3 (fig. 184). 

 4. Hind wing with Mj and M 2 stalked (fig. 183), in our species a third way 

 to apex (when the cell is open, separating well beyond the separation 

 of M 3 and CuJ. 



5. Fore wing caudate 5. Lophoptilus (part). 



5. Fore wing not caudate. 



6. Palpi smooth, R of hind wing running to costa less than three-quar- 

 ters way to apex 6. Psacaphora. 



6. Palpi with second segment slightly tufted below; R of hind wing 



reaching almost to apex. . . 5. Lophoptilus. 



4. Hind wing with M ± and M 2 separate, rarely connate. 



5. Scaling coarse and heavy, with large raised tufts; palpus tufted. 



6. Pecten normal 1. Laverna. 



6. Pecten of a single bristle 3. Walshia. 



5. Scaling fine and smooth; palpus smooth. 



6. Scaling irregular; pecten weak 2. Limnsecia. 



6. Scaling regularly imbricate; pecten absent 8. Perimede. 



1. Hind wing linear with silver bars; maxillary palpi tufted. 



( Heliodinidffi-Idioglossa ) . 

 For an artificial key to the species related most closely to Laverna, see Laverna. 



1. LAVERNA Curtis 

 (Mompha Herrick-Schseffer; Hiibner, in part; Wilsonia Clemens) 



Pecten well developed; palpi with a rough divided tuft on under side of second 

 segment, third nearly as long; scape, tongue, and maxillary palpi normal. Fore 

 wing (fig. 184) with R 4 and R 5 only stalked; M 3 , CUj and Cu 2 equal, evenly spaced, 

 and normal, from an oblique closing vein. Tip of 1st A normally appearing as a 

 terminal fork of 2d A, more rarely free. A widely forked at base. Hind wing with 

 R and Mj approximate at base, well separated from M 2 , which is associated with the 

 Cu-stem; the wing lanceolate; hind wing, rarely, narrow with weak veins. 



Caterpillars mostly associated with the stems and fruit of Onagraceffi. 



L. cephalanthiella Chambers is a Psacaphora. 



Key to the species 

 1. Head and thorax white. 



2. White patch at base of wing continuous on inner margin to middle. 



3. Apical fourth of fore wing mostly white 2. definitella. 



3. Apical fourth of fore wing dark 1. circumscriptella. 



2. White basal patch confined to inner margin and extending to one-fourth 



only, followed by a smaller spot on inner margin 3. murtfeldtella. 



1. Head white, thorax blackish, contrasting. 



2. Fore wing evenly blackish with contrasting white and silver spots. 



3. Fore wing with three separate spots on inner margin 6. sexnotella. 



3. Fore wing with the two outer spots connected 7. wyatteUa. 



2. Fore wing lighter brown, the scales white-tipped. 



( Psacaphora cephalanthiella. ) 

 1. Head and thorax concolorous with fore wing. 



2. Head and thorax, base of inner margin of fore wing, convergent fasciae, etc., 



pinkish white, scaled with black 4a. 



2. Head, thorax, and general ground of fore wing wood brown. 



3. Two black dashes on disc and smaller spots in fold 5. brevivittella. 



3. Tuft in middle of fold forming the largest black mark, no dashes. 



4. stellella. 

 2. Head and thorax blackish .' 8. decorella. 



