DIPTERYGIA; PARASTICHTIS. By Dr. M. Draudt. 
200 
3. Genus: Dipterygia Stph. 
Distinguished from Megusa particularly by the shorter and broader wings; forewing at the inner angle 
somewhat produced, above it the distal margin is somewhat excised; the hair-tufts on the anterior femora 
are absent, the abdomen is more strongly tufted, the tuft on the 2nd ring being especially large. Beside some 
Indo-Australian species (cf. Vol. XI, p. 121, pi. 15 f, g), one of which is palearctic and at the same time American, 
there are 5 purely American species chiefly occurring in the tropics. 
D. scabriuscula L. has been dealt with and figured in the Palearctic Part (Vol. Ill, p. 163, pi. 38 f). scabriuscu- 
It is a common, unmistakable insect occurring in America from Canada to Texas and Colorado. — The reddish lu ' 
brown larva with yellowish-white stripes lives polyphagously on low plants. 
D. patina Harv. (= minorata Barn.) (30b). Forewing grey, irrorated with blackish-brown, the patina. 
median and its two branches are finely black and bordered with whitish, the transverse lines are double, crenulate, 
behind the distal line with black and white vein-dots in the somewhat lighter grey postmedian area; the maculae 
are in whitish rings and surrounded by black; behind the white undulate line there are black internerval streaks 
dotted white at the ends. Hindwing blackish-brown, at the margin darker. The £ is darker with a grey 
hindmarginal patch. Texas, Arizona, and Mexico. 
D. pallida Dgn. (30 b) is somewhat similar, but much smaller and lighter, more reddish-brown, with 'pallida. 
similar though more indistinct markings, the veins finely black-striped and bordered with whitish; the brownish 
undulate line is only in some places noticeable, above the somewhat lighter anal angle there is a triangular 
darker patch. Hindwing yellowish white, at the margin brownish. Paraguay. 
D. ordinaria Btlr. (= berinda Drc. p. p.) (30 b). Forewing red-brown, in some places, particularly ordinaria. 
postmedianly irrorated with purple blackish, with a reddish-brown hindmarginal patch above it, a black 
submedian stripe, with black-striped veins, and dentate, partly double transverse lines; the maculae are in 
grey rings and surrounded by black, outside on the reniform macula with white dots; undulate line whitish 
with black streaks before and behind it. Hindwing reddish-brown, towards the base lighter. From Mexico 
to Venezuela and Brazil. 
D. lignaris Sch.s. (= ordinarius Btlr. $) (30 c) is much larger and stronger than the preceding and lignaris. 
differs in white-edged median veins and branches as w'ell as in the much more sharply dentate anterior transverse 
line. Colombia, Brazil. 
D. assueta Btlr. (30 c) is likewise similar to ordinaria, separable by quite dark red-brown hindwings assueia. 
and more greyish-brown forewings darkened by purple brown spots, the marginal area with a yellowish tinge, 
with red-brown internerval streaks and darker irroration on the discal fold and above the inner angle. 
From Brazil (Amazons). 
D. dolens Drc. (30 c) is the largest species and very different from the others. Forewing blackish- dole ns. 
brown, in the hindmarginal area except the base, at the apex and inner angle whitish-grey, with black, single, 
strongly angled transverse lines which are submedianly connected by a black ray, the maculae rather indistinctly 
marked black; in the dark part of the marginal area there are long black internerval streaks. Hindwing 
diaphanous white with black ends of the veins. Peru. 
4. Genus: Farastichtis Hbn. 
This comprehensive genus, for which the name Septis Hbn. was recently introduced, as Parastichtis 
has already been used for a Cucullian genus (instead of the former Amathes), is very closely allied to the preceding- 
genus. The thoracal scales are intermixed with hairs, and the prothorax and metathorax exhibit parted ridge¬ 
like tufts; beside the dorsal tufts the abdomen is laterally hairy. The larvae mostly live well hidden in the 
ground on roots or low plants and grasses. Cf. Vol. Ill, p. 163. A remarkable fact is that this genus is almost 
entirely absent in the Indo-Australian region, where but few species occur in the districts adjoining to the 
palearctic borders, and in the Khasia Hills (cf. Vol. XI, p. 126 and pi. 16 b). One species is known from 
Africa. 
P. cuculliforniis Grt. (30 d) is a large, reddish ochreous-brown species with dark-striped veins, rather cucullifor- 
inclistinct, strongly dentate transverse lines, and black and white vein-dots behind the distal line; the indistinctly mis - 
defined maculae are confluent; a dark red-brown submedian longitudinal patch is traversed by a very oblique 
light part of the postmedian line. Hindwing light yellowish-brown, at the margin darker. California. — The 
reddish-brown larva is blackish across the dorsum with light fine longitudinal lines and a strong brown neck- 
shield which is traversed by 3 light lines. 
P. verbascoides Gn. (30 c) is similar to the preceding, more contrastingly coloured, the longitudinal verbascoi- 
patch above the hind-margin blackish; the median and the veins of the marginal area are black bordered with dcs. 
white. Hindwing darker. From Canada down to New York. 
