Bulletin - United States National Museum

108 U.S. NATIONAL MUSEUM BULLETIN 257
Forewing suboval, broadest at 1/3,
costa rather curved anteriorly,
less so posteriorly, apex tolerably pointed, termen gently curved,
oblique. Silvery white, with a distinct purple gloss, markings black.
Extreme edge of base of costa black; two small round spots, on base
of costa and beyond base just below costa, respectively; a narrow
elongate spot below these, above middle of disc; a large semioval
spot beyond preceding, just above cell, at 1/3 of wing; three very
faint equidistant dots along posterior 2/5 of costa; three round dots
in a straight, inwardly oblique row across middle of disc, the lower
pair approximated, just above and below middle of fold, third on
upper edge of cell; a pair of round dots on each upper and lower
angle of cell; a less regular dot before middle of termen. Cilia white.
Underside of wing light fuscous grey, with a large elongate-oval
patch of modified very short black scales edged narrowly by naked
area; this patch extending halfway above, halfway inside cell, from
beyond base to middle of wing.
Hindwing glossy white, with a faint yellowish tinge, towards apex
becoming very pale purplish. Costa with an elongate-oval dilatation,
forming a shallow pocket along its basal half, concave and filled with
very dense short whitish-ochreous scales. In repose this pocket
apparently fits exactly over the patch of modified scales on the under
side of the forewing. Cilia concolorous.
Male genitalia: Tegumen broad and rounded, with a prominence on
top, flanked by small folds. Uncus present, hooked, slender and
curved down, top bifid. Socius, a semioval, aciculate lobe. Valva
with basal half rigid and moderately broad, sacculus not modified
anteriorly, posteriorly forming a slender, free curved process.
Cucullus
under 1/2, oval and hairy, with a constricted and keeled base,
bearing below two slender teeth. Aedeagus small, slender, top dilated
and submembranous, base narrower, spoon-shaped, curved.
Material examined: Mindanao, Davao Prov., east slope of Mt.
McKinley, 5600 ft. 25-27.VIII.1946 (CNHM Philippine Exped.
1946-47, H. Hoogstraal), 1 cf , holotype, genit. slide 5739.
An interesting form, showing well-developed and complicated
scent organs between wings; however, these manifest sexual dimorphy
and are only of specific, not of generic importance. Therefore, I
prefer to include the present species in Heterogymna Meyrick, 1913.
Remotely allied with H. chorospila Meyrick, from India and Java.
Copromorphidae
Copromorpha IMeyrick, 1886
Copromorpha Meyrick, 1886, Trans. Roy. Ent. Soc. London, p. 281; 1905, Journ,
Bombay Nat. Hist. Soc, vol. 16, p. 106.—Fletcher, 1929, Mem. Dept.