170 BULLETIN 190, UNITED STATES NATIONAL MUSEUM 



am at a loss here, but suggest a search in a known habitat among deep- 

 rooted herbaceous, perennial plants. Should a female moth be encoun- 

 tered, patient observation for ovipositing may lead to the food plant. 



In distribution the genus Euhagena ranges much more widely than 

 heretofore recorded. I have added as geographical races of nebraskae, 

 mormoni from Utah and intensa from California; and I describe, as a 

 valid species, hirsuta from Fort Davis, Davis Mountains, Tex. Another 

 species represented by a single male in the United States National 

 Museum comes from San Angel, D. F., Mexico, collected by H. F. Wick- 

 ham in 1933. It falls outside the geographical scope of the present paper 

 and is not treated here. 



The late season of emergence of the moths has been an obstacle in 

 field investigations. The genus Euhagena is of outstanding interest, but 

 it will remain inadequately known until supplemented by records of the 

 food plants and information concerning early stages. 



KEY TO NORTH AMERICAN SPECIES OF EUHAGENA 



Wings opaque, red broadly bordered with black. 



nebraskae nebraskae Hy. Edwards 

 Wings semitranslucent, whitish, sparsely touched with red. 



nebraskae mormoni, new form 



Wings brilliant red, stigma small, black nebraskae intensa, new form 



Wings transparent, opalescent, body very hairy, grayish white. 



hirsuta, new species 



EUHAGENA NEBRASKAE NEBRASKAE Hy. Edwards 



Plate 2, Figure 21; Plate 11, Figures 52, 52a; Plate 16, Figure 82; 

 Plate 29, Figures 169, 170 



Euhagena nebraskae Hy. Edwards, Papilio, vol. 1, p. 181, 1881. — Beutenmuller, 

 Bull. Amer. Mus. Nat. Hist., vol. 8, p. 116, 1896; Mem. Amer. Mus. Nat. Hist., 

 vol. 1, pt. 6, p. 239, pi. 31, fig. 32 (male), 1901.— McDunnough, Check list of 

 the Lepidoptera of Canada and the United States of America, pt. 2, No. 8775, 

 1939. 



Pyrrhotocnia coloradensis Beutenmuller, Amer. Mus. Nat. Hist. Bull., vol. 5, 

 p. 25, 1893.— Gillette, Colorado Agr. Coll. Bull. 43, p. 6, 1898. 



Male. — Antennae black ; broadly bipectinate, pectinations appressed, 

 black, tipped white. Labial palpus white, densely clothed with long black 

 hair on basal and second joints beneath. Head black; vertex hairy, the 

 black slightly intermixed with white ; face white ; occipital fringe black. 

 Collar shiny black. Thorax hairy ; velvety black, slightly mixed with 

 white at the sides. Abdomen deep black; segments 2, 4, 6, and 7, nar- 

 rowly banded with glossy white above and at the sides, not beneath ; anal 

 tuft black, flat, rounded at tip. Legs black; posterior tibiae hairy, black 

 mixed with white ; tarsi marked with white. Forewing opaque, subject 

 to individual variations, red, deep orange, or rarely pinkish ; black at base, 

 along the costa, outer margin and narrowly so on inner margin ; cubitus 



