CLEAR-WING MOTHS OF FAMILY AEGERIIDAE 73 



broader and the saccukis ridge bears a straight, narrow line of scales, end- 

 ing before the margin, which lacks a pocket. Other structural differences 

 are present, but these serve best. 



CARMENTA OGALALA, new species 



Plate 22, Figure 129 



Male. — Antennae black. Labial palpi sordid white, black on the sides 

 and at tips. Head black, with a strong brush, which is mixed black and 

 pale yellow, face sordid white. Collar sordid white. Thorax black, 

 broadly marked with golden ochreous laterally, anteriorly, and beneath, 

 this color becoming whitish at posterior margin. Abdomen brownish black 

 with bright-blue reflections, segment 4 with a narrow, white, encircling 

 band, last segment edged with white and segments 5, 6, and 7 beneath with 

 white suffusions ; anal tuft fan-shaped, brownish black, edged with white 

 at the sides and white centrally beneath, iridescent at base above. Coxae 

 and trochanters of forelegs glossy white ; posterior til)iae slightly rough, 

 mostly white with blue-black reflections anterior to spurs, which are white ; 

 tarsi white, slightly shaded with black. Forewing opaque, costa to cell and 

 narrow outer margin bluish black, also to wing base in an otherwise 

 golden-ochreous inner field; the discal mark, not clearly defined, of a 

 deeper ochreous shade ; the fringes grayish brown, a bright blue metallic 

 mark at the wing base ; underside brownish black, with light-gray rays be- 

 tween the veins. Hindwing transparent, margins narrowly brown-black, 

 between the veins inwardly a suffusion of brownish gray for about half 

 the distance to the cell, and between veins 2 and 3 to beyond the cell with 

 golden reflections. 



Female. — Very similar to the male. Hindwing more suffused, only the 

 areas between veins Ic to 5 from the cell to wing base remaining trans- 

 parent. 



Expanse : Male and female, 20 mm. 



Distribution. — Prairie regions of Colorado and Kansas. 



Type. — U.S.N.M. No. 56834. Described from male holotype from 

 Durango, Colo. (Oslar), female allotype, Jewell County, Kans., August 7, 

 1925 (H. J. Grady) , and paratype male, Graham County, Kans., 2,130 feet, 

 August 16, 1912 (F. F. Williams) ; all in the United States National 

 Museum. 



Remarks. — A little-known but very distinct species. Of two examples 

 observed among herbaceous plants on open, hilly pasture lands, near Plain- 

 view, Jefferson County, Colo., 6,000 feet, only one, a male, was captured 

 (Engelhardt and E. L. Bell). None of the plants examined gave evidence 

 of the borer's work. 



