ILLUSTRATIONS OF UNFIGURED LEPIDOPTERA. 97 



Cystineura aurantia A. G. Weeks, Jr. 1 



(Plate XLII, Figure 2.) 

 Habitat: Bolivia, near Coroico. Expanse: 1.65 inches. 



Head nearly black, grayish underneath. Palpi black, grayish underneath. 

 Antennae black, with white annulations at base of each joint. Club black, 

 with orange tip. Legs gray. Thorax black, with gray hairs. Abdomen black 

 above, gray beneath. 



General ground color of upper surface is white, with orange and dark brown 

 markings. 



Costa of fore wing dark brown. Hind margin slightly dentated, a slight 

 thread of white at edge, and within this a narrow margin of dark brown den- 

 tated on inner side. The entire fore wing may be divided equally among three 

 colors, orange, white, and dark brown. The orange covers the outer third, 

 covering the apical space and narrowing to a point at lower angle. The 

 white area covers the central portion, starting at inner margin, from lower 

 angle to a point one-quarter inch from base and narrowing as a triangle to a 

 point on costa one-third distance from apex to base. The upper portion of 

 this white area is represented by four white interspacial dashes running down- 

 ward at right angles to costa and then broadening out and occupying nearly 

 all of the lower interspaces. The discoidal space and costal space above, also 

 the adjoining portion of the four lower interspaces, are dark brown, excepting 

 a slight white dash in discoidal space, extending from outer end and running 

 toward base. There is another smaller dash above it, and also a very promi- 

 nent triangular white mark, one-quarter inch long, with its base at end of 

 discoidal space, extending toward hind margin. The entire brownish area is 

 lightened by a scattering of grayish scales, thickest near base. 



Hind margin of hind wing dentated, and edged by a white thread. The bor- 

 der of hind margin is nearly black, and just within the edge is a series of inter- 

 spacial half moons of blue. The basal area is brown. The rest of the wing is 

 white, excepting a band of brown running transversely across centre of wing. 



Under side of fore wing has same markings as upper side, but the brown is 

 replaced by orange. There is also an irregular white line running from base to 

 end of discoidal space. 



Under side of hind wing is the same as upper side, except that the brown is 

 replaced by dark orange dusted with blackish scales, and the white portion, 

 while fully as prominent, is more restricted in its area. The half moons at 

 hind margin are white instead of blue. 



In some specimens the brown portions are so heavily dusted with white 

 scales that they appear gray, while in others there is almost an entire absence 



i Pr. New England Zool. Club, Vol. Ill, p. 5, January 17, 1902. 



