NO. 38660 MICROLEPIDOPTERA, XVII—CLARKE 9 
Male genitalia slide JFGC no. 11612. Harpe broad, saccular process 
extending to about half the length of harpe; posterior edge of process 
strongly setaceous. Uncus broad, divided into two flat elements, each 
terminating in a curved point. Vinculum narrow, lateral elements not 
coalesced in middle. Tegumen about half the length of harpe. Anellus 
cup shaped. Aedeagus stout, curved, with a long, narrow, dorsodistal 
projection. 
Female genitalia slide JFGC no. 11613. Antrum strongly sclerotized. 
Inception of ductus seminalis from a fovea in posterior part of bursa 
copulatrix. Ductus bursae very short, broad. Bursa copulatrix strongly 
rugose on right side. Signum absent. Ostium broad, slitlike, transverse. 
Lamella antevaginalis moderately sclerotized; lamella postvaginalis 
with two strongly sclerotized lateral areas. 
Holotype: U.S. National Museum No. 69730. 
Type-locality: Venezuela, Aragua, Rancho Grande, 1100 m. 
Distribution: Known only from the type-locality. 
Described from the male holotype (16-23.X%.66. 5S. S. and W. D. 
Duckworth), 5 oo and 1 2 paratypes with same locality and dates, 
from 16-31.X.66. 
This taxon is strikingly similar to turialba but is a smaller insect 
with more strongly mottled hindwings. The saccular process of alphi- 
topa is much shorter than that of turialba and the aedeagus is much 
more slender (see figs. 3, 4). The two lateral, sclerotized areas of the 
lamella postvaginalis of turialba are larger and the rugose portion of 
the bursa copulatrix is smaller than in alphitopa. 
Hysterosia melasma, new species 
FiaureE 5; Puate 1 (ria. 4) 
Alar expanse 22-24 mm. 
Labial palpus white; second segment fuscous ventrally and apically 
and irrorate with fuscous; third segment fuscous on outer side. Antenna 
gray, suffused with fuscous basally. Head mixed gray and sordid white. 
Thorax gray, irrorate with fuscous; tegula tipped with white; pos- 
terior tuft with white scales mixed. Forewing ground color gray, 
transversely marked with numerous fine, fuscous strigulae; from 
costal two-fifths, obliquely to inner angle, a straight, narrow, whitish 
line; from apical third of costa, a transverse, triangular whitish patch 
extends to center of wing; between this and the basal whitish line, 
a black, longitudinal dash; from apical third of costa, and confluent 
with the tip of the triangular patch, a double, narrow, whitish, 
transverse line extends outwardly to vein 3, then turns inwardly to 
tornus; outer edge of this pale line bordered with a very thin line of 
fuscous; subapically, a whitish line extends around termen; underside 
of costa spotted with white; cilia gray basally, white apically. Hind- 
