72 UNITED STATES NATIONAL MUSEUM BULLETIN 2 76 



background color; lines usually with only small indenta- 

 tions, but sometimes meeting along Cu 2, and rarely cutting 

 off an "island" (males in figs. 291-299); distribution— us- 

 ually along watercourses or irrigated areas in central and 

 southern Arizona as presently known (fig. 4). 



incurvum incurvum, p. 173 



12(10). Color ranging from nearly yellow to dark reddish-brown 

 (males in figs. 209-223), but usually varying combinations 

 of bright yellow-cream and deep reddish-brown; lines with 

 no identations or very small ones, rarely deep enough to 

 meet between the lines; the most frequent color pattern a 

 yellowish forewing with a variable, dark, reddish-brown 

 median band as in figures 209, 211, 218, and 221; distri- 

 bution — the Canadian prairies and the western two-thirds 

 of the Great Plains in the United States (fig. 2). 



calif ornicum lutescens, p. 160 



Color pattern similar or very different from that described 



above; distribution — west and north of the area described 



above 13 



13(12). Color pattern usually various shades of orange-brown, with 

 lines on forewings usually yellowish as in figures 177, 178, 

 182-184, and 191-193, but other variations as in figures 

 176 and 194—196 may be found; lines usually with no 

 indentations along the veins, or only with very small ones; 

 distribution — northern and western California, Oregon, 

 Washington, British Columbia, western and northern 

 Alberta, northern Saskatchewan, northern Manitoba, 

 Ontario, Quebec, and parts of neighboring states and 

 provdnces. 



calif ornicum calif ornicum (fig. 3), p. 138 



calif ornicum ambisimile (fig. 3), p. 142 



californicum pluviale (fig. 2), p. 152 



Adult males of these subspecies are identifiable only with 



the aid of distributional data. 



Color pattern highly variable from area to area; variations 



on nearly all of the color patterns described since couplet 



7 can be found (excluding some of the incurvum patterns) 



(males in figs. 224-269); often many of these variations 



can be found in a single area (figs. 224-248) ; distribution — 



parts of California, Oregon, Washington, Idaho, Montana, 



Arizona, New Mexico, Utah, Nevada, Wyoming, Colorado, 



Texas, and possibly Mexico (fig. 2). 



various populations oi californicum, p. 123 



