Bulletin - United States National Museum

—
116 U.S. NATIONAL MUSEUM BULLETIN 257
Hindwing as in male, but veins touched more clearly with golden
yellowish, becoming darker in certain lights. Underside as in male.
Male genitalia as described with the genus.
Female genitalia: Eighth segment rather sclerotized throughout,
upper edge of ventrite emarginate in middle, on both sides of this, a
narrow strong ridge. Ostium bursae connected with emargination
by a shallow impression, moderate, less than inner half formed by
the sternite. Lower edge of the 8th segment normal. Signum, a
strong transverse rhomboidal sclerite with serrulate edge.
Material examined: Luzon, Mt. Makiling (Baker), 1 cf, holotype,
genit. slide 5147, 1 9, allotype, genit. slide 5148 (USNM).
Amorbaea subiista, new species
Figures 151-152, 585
Female, 25 mm. Head, palpus, thorax cream color. Antenna pale
bronze fuscous. Abdomen glossy yellowish white, bands of bristles
coppery, concealed by white scales.
Forewing suboval, slightly dilated, costa moderately ciu-ved toward
extremities, apex obtusely pointed, termen straight, oblique.
Creamy, with a golden gloss, becoming slightly deeper colored towards
base, more so along dorsum below fold; very narrow blackish-grey
suffusion along dorsum around its
middle; sparse sprinkling of dark
grey-fuscous scales above end of fold, sparsely extended to middle of
wing breadth. CUia white, tipped with grey.
Hindwing glossy white with a strong golden gloss. Cilia glossy
silvery white.
Female genitalia: Eighth segment moderately sclerotized, upper
edge broader emarginated than in Amorbaea subtusvena, lateral ridges
situated inside this emargination ; lower edge of sternite twice strongly
emarginate, a spheroidal tumescence of intersegmental membrane in
each emargination. Ostium bm-sae narrowly erected, almost marginal,
without a furrow to the caudal edge of sternite. Signum smaller.
Material examined: Luzon, Mt. Makiling (Baker), 1 9, holotype,
genit. slide 5149 (USNM). Related to the preceding species.
Metathrinca Meyrick, 1908
Metalhrinca Meyrick, 1908, Joum. Bombay Nat. Hist. Soc, vol. 18, p. 625.
Fletcher, 1929, Mem. Dept. Agric. India, Ent. ser., vol. 11, p. 138.—Clarke,
1955, Catalogue . . . Microlepidoptera . . . Meyrick, vol. 2, p. 445, pi.
221, figs. 1-ld (wings, neuration, head, genit. cf )•
Type species: Metathrinca ancistrias Meyrick, 1908, Ceylon.
The genus has been based chiefly on the neiu'ation. Although the
nem-ation of the following species varies slightly and is not congruent
with that of the type species, the genitalia of both sexes and the entire