Bulletin - United States National Museum

196 U.S. NATIONAL MUSEUM BULLETIN 257
Itnma poecilostoma, new species
Figures 291-293, 670
Male and female, 18 mm. Head pale yellowdsh fuscous with some
white opalescence, face pale yellow. Antenna pale yellow above,
ochreous below, ciliations under 1. Palpus yellowish white, median
segment \dth a narrow oblique transverse streak from base above to
outer edge, this edge broadly opalescent lilac grey to apex, apex lilac
grey, median (remaining) portion of upper edge with a bright yellow
semioval spot. Thorax pale yellowish fuscous, mLxed mth pale
yellow hau'-scales. Abdomen fuscous, venter bright yellow in male,
whitish in female. Posterior tibia in male beneath with a dense and
broad scale brush, white, tipped with grey.
Forewing broad, subtruncate, costa rather straight, gently bent and
prominent at 3/4, apex rounded, termen convex, little oblique. Pale
fuscous grey with a lilac purple gloss, densely mixed with pale yellow
hair-scales and appearing yellowish grey; colors on anterior half of
wing coarser, on posterior more evenly mixed. A bright yellow marginal
very narrow streak along anterior half of costa, edged below by a
suffused narrow purphsh-grey streak; posterior extremity of this
marginal streak emitting a rather narrow bright yellow transverse
line to just above 3/4 of dorsum; this line curved outwardly, but in
center of disc abruptly pressed inwardly, in
order to half encircle a
suffused dark brown discal dot before 2/3; a faint yellowish suffusion
on dorsum forming the end of this fascia; a slender obhque and wedgeshaped
mark from 3/4 of costa, limited by the course of vein 11; a
somewhat lighter yellow line along posterior part of costa, dilated in
apex, slightly narrowed and regularly serrate along termen, followed
by a dark brown marginal line filling out the serrations. Cilia fuscous
with a dark fuscous basal line and slightly paler tips.
Male genitalia: Tegumen moderate, rather broad, slightly constricted
below the top which is thickened and rounded. Vinculum
with rectangular top with a small triangular median prominence.
Valva thick, with several complicated longitudnial folds, sacculus
with an apical inwards-directed straight obtuse process ventrally, and
a long sclerotized rod inwardly, at the end curved inwards and furcate.
Cucullus top obliquely oval. Anellus lobes long, curved, almost reaching
top of tegumen. Aedeagus long, sinuate, base bulbous. Two pairs
of coremata. Eighth segment modified.
Female genitalia: Ovipositor rounded, floricomous. Ostium, a
rounded cup, hairy inside. Ductus bursae extremely long, upper
part sinuate, with a strong cestum, lower part strongly tortuous,
almost plaited. Corpus bursae finely granulate on top and with a
stronger granulate round patch obUquely opposite base of ductus.
Material examined: Luzon, Mt. Makiling (Baker), 1 cf, holotype,
genit. slide 5165; 1 9, allotype, genit. slide 5 174A. 4 cf , 4 9, paratypes