Bulletin - United States National Museum

172 U.S. NATIONAL MUSEUM BULLETIN 257
Tanyzancla pepona, new species
Figures 256, 275, 643-644, 808
Male, 24-25 mm. Head ochreoiis fuscous, roughish. Antenna
with flagellum ochreous fuscous, scape dark fuscous except apex,
ciliations under 1, pecten long and dense, fuscous with a pale ochreous
basal half. Palpus long in male, median segment less than 2X
length of face, in female longer and more slender, recurved, terminal
segment 5/6; dark fuscous, median segment with a subapical broad
ring, below this mixed with ochreous, tip pale ochreous; terminal
segment dark fuscous, median part mixed with pale ochreous, posterior
edge pale ochreous. Thorax pale ochreous, patagia light ochreous,
tegulae dark fuscous, with pale tips. Abdomen fuscous brownish,
anal tuft and posterior edges of tergites pale ochreous.
Forewing elongate suboval, dilated, broadest at 4/5, costa gentlycurved
at base, faintly concave in middle, considerably^ curved before
apex, apex obtusely pointed, termen hardly concave, obhque, long.
Wliitish ochreous, markings extended, blackish fuscous. Base with
a direct transverse band, below emitting a pointed streak parallel
to basal third of fold, above forming a rather narrow streak along
base of costal edge, dilated beyond middle; a very irregular undulate
transverse fascia of pale fuscous dusting from this dilatation to dorsum
before middle, including rather large slightly elongate first discal
stigma; a large rounded blackish patch in middle of disc halfway
between stigma and base, emarginate posteriorly; somewhat less than
posterior half of wing as far as fold blackish fuscous, including a
rounded pale ochreous spot below second discal stigma which is
blackish and large, but little contrasting; posterior edge of dark
half of wing irregular, partly suffused, with several long and narrow
teeth; a brighter ochreous triangular spot on 2/3 of costa conspicuous;
a whitish coarse dusting with a distinct gloss tending to form a transverse
broad band from costa before apex to dorsum before tornus,
gradually narrowed downwards; another band of similar glossy
whitish dusting formed by a series of regular short intraneural streaks,
half way between preceding and wing margin and parallel to that
margin, below costa before apex, before apex and termen, to tornus.
Cilia ochreous, infuscated, above apex becoming dark fuscous.
Hindwing golden ochreous, glossy, rather deeply infuscated,
extreme apex fuscous. Cilia concolorous, with a pale base and a
darker subbasal faint band.
Female, 28 mm. A worn specimen, but very probably the sex
partner. Pale ochreous, posterior half of wing infuscated but less
dark than in male. Basal dark patch and costal streak discernible.
Stigmata dark fuscous, first discal elongate, second discal rounded,
plical rather beyond first discal; triangular pale ochreous costal spot