Bulletin - United States National Museum

262 U.S. NATIONAL MUSEUM BULLETIN 257
//. corethrodes. There are, however, differences in neuration, as
described; in corethrodes the apex of the forewing is more produced.
AcrocenoteSf new genus
Head with long appressed scales,
roughly spreading at the sides.
Ocellus absent. Proboscis very short. Antenna about 2/3, slightly
thickened throughout in female, minutely ciliate, scape elongate with
a long but sparse pecten. Labial palpus long, recurved, ascending,
flattened anteroposteriorly, smooth along posterior side, anterior side
throughout except basal half of median segment with a long roughly
projecting fringe of scales; terminal segment over 1/3, slightly oval,
subacute. Maxillary palpus slender, long, multisegmented, porrected.
Thorax smooth. Posterior tibia smooth-scaled.
Forewing lanceolate, pointed, apex produced. Vein Ic not furcate
at base, 2 from far before angle, 3 from angle, 4, 5 distant, all these
veins rather short, 6 and 7 absent, cell open between 5 and 8, 9 and
10 remote, 11 from before middle of cell, upper edge of cell almost
obliterate along its basal half. Retinaculum along vein 12.
Hindwing 1, cilia 2/3; subsemioval, pointed, apex moderately produced.
Ic well defined, from base, 2 from well beyond middle, 3 from
angle, 4 remote, median, 5 and 6 long-stalked, 6 to costa, stalk forming
continuation of upper angle of cell, 7 free from base, parallel posteriorly,
shghtly diverging from beyond base. Frenulum long.
Female genitalia of a simple type, apophyses very long and sclerotized,
ovipositor bifid, points acute. Sterigma not modified. Ductus
bursae simple and rather long. Bursa copulatrLx ovoid. Signum
strong, inverted mushroom-like, a rounded body with a clavate
external process with a rounded top.
Type species: Acrocenotes niphochrysa, new species.
An interesting novel form with the hindwing neuration and signum
as in Acrolepia (perlepidella Stainton), but with other features quite
different. Unfortunately males are not available.
Acrocenotes niphochrysa, new species
Figures 413-414, 758
Female, 15 mm. Head white touched with yellow. Palpus white,
frontal tuft mixed with tawny and blackish. Antenna pale yellowish.
Thorax white touched with yeUow, shoulder a trifle brighter yellow.
Abdomen pale ochreous.
Forewing broadly lanceolate, apex pointed and produced, termen
gently curved, very oblique. Pale yellow, posterior 2/3 except towards
costa strewn with large rounded bright yeUow-ochreous scales.
Cilia
pale ochreous, around apex and before upper half of termen with a
supramedian band of sparse black dusting.