SCOP ARIID.i:— SCOP ARIA. 339 



15. S. pallida, Htcpli. — Expanse f to | inch (15-18 mm.). 

 Fore wings short, trigonate, bhint, white, with the markings 

 faint — mere obscure dashes and dusting ; discal spot a black 

 dot ; second line straight. Hind wings white. 



Antenn£e oi' the male simple, shining brown ; labial palpi 

 rather large, brown outside, whitish within ; maxillary palpi 

 conspicuous, but short, dusky white ; head and thorax 

 brownish white ; abdomen slender, silky greyish-white. 

 Fore wings short, blunt, narrowly trigonate ; costa very 

 slightly arched ; apex squarely angulated ; hind margin 

 nearly straight and hardly oblique ; white, faintly dusted or 

 shaded with pale brown ; a streak of black atoms from the 

 base runs along the costa, and another from the middle of 

 the base to the first line ; this last is but faintly perceptible 

 except that from it proceed three streaks, one on the costa, 

 another — consisting merely of black atoms — in the discal 

 cell, and the third below, forming a very small claviform 

 stigma ; beyond are minute black dashes on the nervures, 

 and the second line indicated only by a channel of white 

 ground colour between brown shading and hardly perceptible 

 black dashes ; the latter form a narrow transverse cloud 

 pointing to the apex ; hind margin minutely dotted with 

 black ; cilia white with tiny brown clouds. Hind wings 

 broad, the hind margin but little rounded ; anal angle 

 prominent ; shining white with smoky clouding along the 

 hind margin ; cilia shining white. Female similar. 



Underside of the fore wings dark smoky-brown, very 

 lossy ; a paler streak from the middle runs along the costa 

 to the ajiex. Hind wings glistening white. Body and legs 

 brownish white. 



Slightly variable in the ground colour — browner or whiter. 

 In the browner specimens there is usually a faint subterminal 

 white shade, and the markings are more noticeable. 



This species is easily recognised from its small size, the 

 triangular shape of its fore wings, and the absence of definite 

 markings. 



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