Bulletin - United States National Museum

MICROLEPIDOPTERA OF PHILIPPINE ISLANDS 151
Euhontalocera heliosema, new species
Figures 217-219, 625
Male, 16 mm. Head (rubbed) with bluish reflections, vertex purple,
side tufts yellow. Antenna purplish bronze, tip slightly mixed with
white, scape light ochreous. Palpus purplish, upper half of posterior
edge of median segment and terminal segment pale ochreous. Collar
yellow with bright blue reflections. Thorax dark purple brown
(rubbed). Abdomen black, tergites with faint leaden-greenish bands,
posterior halves of segments pale yellow, venter leaden grey, posterior
half pale yellow, anal tuft black. Posterior leg purple, femur entirely
yeUow and tibia "with a yellow spot on upper half above.
Fore^^ing lanceolate, dilated, broadest at 3/4, point long, acute,
termen hardly ciu-ved, very oblique. Black with strong purple
reflections except on broad dull edges to markings. Islarkings bright
yellow. A rather slender semiclavate longitudinal median mark from
bej'ond base to 1/3 of wing, its anterior end touching a shorter wedgeshaped
parallel streak above preceding; a streak along dorsum from
well beyond base to before tornus, containing a semioval spot of ground
color on 1/4 of dorsum; this streak gently narrowed posteriorly, but on
middle of dorsum dilated into a triangle with acute top reaching
middle of disc; an elongate-triangular patch on costa occupying less
than its 3rd foiu'th, anterior edge little, posterior strongly oblique, top
to closing vein; a longitudinal stripe from closing vein, below middle
of wing, furcate posteriorly, a narrow line above and beyond it and
another, shorter, below it.
Cilia (damaged) blackish.
Male genitaha: Tegumen slender, long, its ventral (forward) part
sUghtly compressed below top, probably thus forming the uncus which
is otherwise not indicated; top shortly bilobed, with a few small
bristles. Saccus elongate V-shaped, well sclerotized. Valva moderate
at base, sacculus 1/2, well defined, sclerotized, Avith an apical small
hook on top of an emarginate bladelike structure. Cucullus long and
slender, gently curved.
Anellus lobe strong, moderately long, elongatetriangular
and bristly. Juxta small, trapezoidal. Aedeagus slender,
straight, slightly dilated at both ends.
Hindwing and cilia deep blackish broAvn with purple reflections.
Material examined: Mindanao, Lanao, plains, Kolambugan, 25.V.
1914 (A.E. Wileman), 1 d', holotype, genit. shde 5582 (BM). A
slender, elegant insect with the appearance of a Heliodinid.
Atasthalistis Meyrick, 1886
Key to the Philippine Species of Atasthalistis
1. Hindwing orange with a blackish posterior half A. ochreoviridella
Hindwing entirely blackish A. diacrita, new species