910 
NYSTALEA. By Dr. M. Draijdt. 
marmorea. 
idonea. 
guzmani. 
albipicta. 
marona. 
multiplex. 
sequora. 
corusca. 
zeuzeroi- 
des. 
linei¬ 
plena. 
malga. 
nigritor- 
quata. 
N. marmorea Schs. (= mocotana Schs.) (143 f) has dark greyish-brown forewings with indistinct trans¬ 
verse lines and a dentate brown subterminal line behind which there is a row of small velvety brown, light- 
edged spots; large whitish spots more distinctly showing the transverse markings are in the centre of the 
costal margin, at the apex and interior angle. Hindwing diaphanous white in the basal half, blackish-brown 
at the margin. Trinidad; Venezuela, Colombia. 
N. idonea Wkr. (143 f) and the two following species form a group of closely allied forms which are 
distinguished by 2 large round subterminal spots from a whitish to a reddish-yellow colour on the forewings; 
these spots may also disappear, and the species seems to be rather variable, on the whole. Fore wing olive 
greyish-brown, irrorated darker and whitish, with indistinct double dentate transverse lines and an almost 
cordiform reniform macula, the point of which is turned inward. Hindwing greyish-brown. Head and collar 
from reddish-yellow to blackish-brown. Colombia, Bolivia. 
N. guzmani Schs. (143 f). Forewing olive brown with fine undulated transverse lines; a whitish cellular 
spot before the centre and a costal-marginal streak above it; a dark brown oblique stripe behind the double 
median line extends from the costal margin to below the median vein; the large irregular discal spot is sur¬ 
rounded with white, and dusted with white on both sides; the large white apical spot extends to the 
posterior transverse line and encloses a short black streak. Hindwing brownish-grey, lighter towards the base. 
Costa Rica to Colombia. 
N. albipicta Schs. (143 g) is similar to the two preceding species, but easily separable by the white head 
and palpi as well as the orange brown tuft of the vertex and the collar; the double transverse lines are also 
partly filled with orange; the white median spot is larger and reaches the interior lower end of the apical spot 
the centre of which is slightly strangulated; small white spots are also in the centre of the subterminal line. 
French Guiana. 
N. marona Schs. Forewing light brown, strewn with darker brown, black and grey, so that all the 
markings become very indistinct, with double brownish transverse lines and a double velvety black cell-end 
streak which is closed above; the posterior transverse line is black between the veins, a thick black crescenti- 
form line behind it, being broadest on vein 5; the submarginal line is also velvety black, bordered with grey 
distally. Hindwing dark brown, lighter in the basal half. Expanse of wings: 51 mm. French Guiana. 
N. multiplex Dogn. (143 g) has a greyish-brown ground-colour, marbled olive and yellowish in the 
cell, in the median area, apically and in the inner-angular third, traversed by numerous irregular olive trans¬ 
verse markings; renimacular spot olive, bordered with black, a black transverse bar before it is bordered with 
light inside; 2 large olive subterminal spots above and below the centre are bordered with black inside and 
often with white outside, followed by a yellowish-white and, behind it, a black undulate line. Hindwing 
whitish, broadly bordered with blackish-brown. French Guiana. 
N. sequora Schs. Forewing grey with double black transverse lines, the posterior line treble, followed 
above the centre by a black line, below it there are brown spots and a series of steel-grey subterminal spots; 
reniform macula darker grey, bordered with velvety black. Hindwing brownish-white, darkened at the margin. 
Expanse of wings: 54 mm. British Guiana. 
N. corusca Schs. (= nigriplaga Bothsch.) (143 g) is a very large species with relatively broad wings; 
forewing olive brownish, lighter in the basal third, with darker longitudinal stripes between the veins, with 
notched blackish transverse lines, a thick black cell-end dot and a black stripe before it; a broad slate-blackish 
shadowy stripe extends from the third quarter of the costal margin to the distal margin below the apex, a 
darker triangular spot is above it before the apex. Hindwing brownish, lighter towards the base. Brazil. 
N. zeuzeroides Bothsch. is stated to be nearest to discalis, the silvery mouse-coloured forewing exhibits 
numerous brown and white transverse striae partly representing notched transverse lines; a grey spot finely 
surrounded with brown is at the cell-end, a brown subcostal streak is postdiscally. Hindwing dark brown, 
lighter towards the base. Expanse of wings: 66 mm. Amazons. 
N. lineiplena. Wkr. ( = cucullia Fldr., congrua Dyar) (143 g). Forewing brownish, with darker longitudinal 
stripes and a deep brown shadow along the median vein to the distal margin, widening from the cell-end to 
the upper radial branch, a black discal dot in the lower cell-angle. Hindwing whitish with a narrow dark brown 
distal margin. Brazil. 
N. malga Schs. ( 1 43 g) is somewhat similar to lineiplena, but much smaller, likewise light brown, the 
dark brown longitudinal stripe much broader from the base, terminating at the distal margin between 4 and 
7, with black longitudinal streaks between these veins; two indistinct spots surrounded by light brown are 
in the cell; double transverse lines only at the costal margin, only the posterior one is also distinct at the inner 
margin. Colombia, Rio de Janeiro. 
N. nigritorquata Dogn. (= alba Dogn.) (143 h) has greyish-white forewings with very feeble, brownish, 
oblique shadowy transverse lines proceeding from darker brown costal-marginal spots which are double 
distally; the median vein and veins 4 and 5 are fine black, a double, very oblique black line from the lower cell-end 
to the base on the submedian fold; a thick black spot above the anal angle. Hindwing diaphanous white with 
fine brown veins and margin. Colombia, Brazil. 
