The Moths and Butterflies 425 
described in the thinly scaled, not hairy, condition of the wings and the 
prevalence of black and white in the pattern instead of warmer colors. II. 
maia , expanding 2J inches, is subtransparent black with a broad middle 
transverse band of white on each wing; in this band is a small blackish blotch 
Fig. 610. —The Io emperor-moth, Automeris io, and cocoon; female moth above; 
male below. (After Lugger; natural size.) 
isolated in the hind wings, but connected with the black of the base in the 
fore wings. This species occurs in the eastern states; a similar species, H. 
nevadensis , being found from the Rocky Mountains to the Pacific; H. electra , 
found in southern California, has the hind wings blackish red; other species, 
found in New Mexico and Arizona, are mostly black and white with a red- 
