NORTH AMERICAN EUCOSMINAE. 165 



Distribution according to specimens in National Collection, Ameri- 

 can Miisemn, and collection Barnes: North Carolina, New Jersey, 

 New Hampshire, District of Colmnbia, Indiana, Illinois, Michigan, 

 California. 



Alar expanse. — 10-11 mm. 



Types. — In Academy Natural Science Philadelphia (salicicolana) ; 

 in collection Fernald {saliciana) . 



Type locality. — Illinois. 



Food plant. — Salix. 



13. Genus PROTEOTERAS Riley. 



(Figs. 7, 25, 299.) 



Genotype. — Proteoieras aesculana Riley. 



Thorax with a slight posterior tuft. 



Fore wing with three or four tufts of raised scales above dorsal 

 margin (near lower margin of cell) in both sexes; termen concave 

 between veins 3 and 6 ; 12 veins ; 7 and 8 separate ; 4 and 5 separate ; 

 10 from cell about midway between 9 and 11; 11 from cell just 

 before middle ; upper internal vein of cell from between 10 and 11 ; 

 3, 4, and 5 closely approximate at termen ; 2 slightly bent up towards 

 termen. No costal fold in male. 



Hind wing with 8 veins; 6 and 7 closely approximate at base; 

 3 and 4 stalked; in male with costal hair pencil developed and 

 often with a thickening of coarse black scales along costal margin 

 (fig.T). 



Male genitalia with harpe elongate, narrow and with a row 

 (3 to 5) of long, heavy, flattened spines on outer surface; cucullus 

 reduced; sacculus fringed with long hairlike spines near base and 

 with a cluster of short stout spines near incurvation of neck. Uncus 

 rudimentary. Socii developed; fingerlike; short; with long hair 

 pencil. Gnathos free (as in Eucosma). Aedoeagus short; straight; 

 moderately stout; cornuti a cluster of elongate spines. Eighth 

 abdominal segment slightly modified. 



A highly specialized genus showing in color, pattern, and geni- 

 talia, a number of resemblances to Epinotia., but apparently derived 

 through Zeiraphera and Gypsononia from the Epiblema- Eucosma 

 stem. 



KEY TO THE SPECIES OF PROTEOTERAS. 



1. Fore wing with ground color gray, olivaceous or bright green 3 



Fore wing with ground color sordid white 2 



2. Dark markings of fore wing blackish gray (6) arizonae. 



Dark markings of fore wing olivaceous (7) obnigrana. 



3. Fore wing with ground color gray 4 



Fore wing with ground color olivaceous or bright green 5 



4. Fore wing unicolorous or with dark markings nearly obsolete. (2) willingana. 

 Fore wing with broad black crescent band from mid costa to apex and with 



costal area enclosed within the crescent, ochreous (3) crescentana. 



