4 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 120 
dorsally and laterally, white ventrally; third segment short, porrect 
or slightly downturned, luteous dorsally and laterally, white below. 
Head, thorax, and abdomen pale ochreous above, whitish below. 
Forewing: Upper surface pale yellow, somewhat shiny; area along 
costa, the reniform, discal dot, and two transverse lines luteous; 
subterminal line absent. ‘Transverse lines smooth, transverse an- 
terior line bent outwardly, concave or weakly angulate. Posterior 
transverse line directly posterior from costa to about vein 7, slightly 
concave outwardly to vein 3, angled inward to vein 2, outward to 
fold between veins 1b and 2, thence slightly inward to inner margin 
of wing. Hindwing: Upper surface ground color similar to that of 
forewing but paler from cell to costa; postmedial line appearing as a 
continuation of transverse line of forewing and terminating at about 
vein 2; subterminal line absent. 
Fringe of fore- and hindwings concolorous with ground color of 
wings. Under surface of wings paler than upper, with markings 
evident but weaker. 
Genitalia (fig. 8): Uncus with apex bluntly pointed. Harpe with 
simple hairlike scales; the sclerotized hooklike structure short, stout, 
bifid. Vinculum rather broadly concave midventrally. Aedeagus 
with an irregular, elongate patch of numerous spinelike cornuti and 
distally, a strong, single spine and a tapered, subcylindrical structure, 
the latter with circular grooves; basal keel absent or obsolescent. 
FEMALE (fig. 105).—Alar expanse 16-20 mm. Color and macula- 
tion like that of male. Genitalia (fig. 62) with sclerotization of ven- 
tral margin of ostium weak or absent; ductus bursae broad between 
ostium and origin of ductus seminalis; accessory pouch small. 
Larva.—Mature, 22 mm long. Head sordid white, with retic- 
ulate amber markings; fuscous pigmentation of lateral incision of 
hind margin inconspicuous or absent. Prothoracic shield sordid 
white, middorsal markings weak, pale amber; area adjacent to lateral 
margin darker and extending almost to base of seta Ib. Pinacula 
bearing setae Ia-Ib and IIJa—IIb of mesothorax separate, but slightly 
elevated. Pinacula bearing setae IJa-IIb of the meso- and meta- 
thorax and abdominal segments 1-8 with the sclerotization stronger 
and the brownish or fuscous pigmentation more extensive than those 
pinacula above or below. Ninth abdominal segment with pigmented 
area of pinaculum of seta II small and adjacent to base of the seta; 
pigmentation of pinaculum bearing setae I and III extensive, covering 
almost the entire area; pinaculum of seta VI nonpigmented. 
Typrs.—British Museum (Nat. Hist.): helvialis, female; thycealis, 
male; apertalis, male and female. American Museum of Natural 
History: citrina, female, hereby designated lectotype. 
