Bulletin - United States National Museum

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MICROLEPIDOPTERA OF PHILIPPINE ISLANDS 195
Male genitalia: Tegiimen entirely membranous, indefinite. Vinculum
moderate, top prominent and rounded. Valva robust, thick,
costa sclerotized and forming a broad blade, cucullus rounded with
two small angular prominences ventrally; saccidus broad, ending in
a sclerotized, furcate process, with upper point long and curved.
Upper edge of anellus wdth a deep W-shaped excision. Aedeagus
slender, sinuate, coecum abruptly dilated.
spines and a patch of dentations.
Cornuti, a series of short
Material examined: Luzon, Los Bafios, IX. 1922 (Dr. M. Koxas).
"Ace. No. Le 93, Coll of Agr., Univ., P.I.," 1 cf , holotype, genit.
slide 5163 (USNAI). Probably nearest to /. mesochorda Meyrick,
from Assam.
Imma macrochorda regmophora, new subspecies
Figure 669
Male, 25 mm. Head pale grey fuscous, face whitish fuscous.
Antenna with scape whitish fuscous but appearing darker in certain
lights, flagellum dark fuscous above, yello^dsh below; bipectinated,
pectinations 3. Palpus light fuscous grey, somewhat darker towards
apex, median segment towards base below pale ochreous, exceeding
base of antenna. Thorax light purple fuscous, a whitish ill-defined
transverse band below apex. Abdomen purple fuscous, venter
whitish ochreous.
Forewing oblong, dilated, broadest at 5/6; costa rather curved at
base, less so before apex, apex rounded, termen gently rounded, little
obUque. Veins 7 and 8 stalked, 8 to termen just below apex. Dark
fuscous ^^'ith moderate purple hue; costa, dorsum, and terminal third
not reaching cell suffused deeper fuscous; a whitish transverse fascia
from distinctly beyond middle of costa to before 2/3 of dorsum,
narrow, gently dilated on costa, slightly u-regidarly undulate, on vein
11 shghtly outwards-obhque, tolerably straight to fold, very slightly
outwards convex below this, hardly dilated again on dorsum. Cilia
dark fuscous (imperfect).
Hindwing dark blackish fuscous, not paler towards base, whitish
along costa from base to well before apex. Cilia dark fuscous
(damaged)
Male genitalia: Similar to those of the nominate form, but Avith the
prong at the end of the saccidus somewhat less distinctly furcate.
(The vinculum and the bases of the valvae are damaged).
Material examined: Mindanao, Lanao, plains, Kolambugan,
10.VL1914 (A.E. Wileman), 1 d", holotype, genit. slide 5682.
In spite of a slightly different position and shape of the transverse
fascia and the very slight differences of the genitalia, this form should
be regarded as a subspecies of /. macrochorda, from Luzon.