ACRONYCTA. By Dr. M. Dratot. 
leporina. 
hemileuca. 
phaedra. 
phaedriola. 
chingana. 
jankowskii. 
cubitata. 
suigensis. 
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metathorax. Besides this, veins 6 and 7 always have short stalks on the hindwings in Acronycta which is not 
the case in Craniophora. Great objection was taken to the alphabetical ordination in Vol. Ill which took no 
account of the relationship of the species to one another. As an exception we therefore have to alter the order 
and have chosen a new sequence. For this reason we are enumerating all the names again. 
Type of the Genus: A„ leporina L. 
Sect. I. Thorax covered only with scales: (Hvboma L.) 
A. hemileuca Piing. (1 b). To the insufficient definition it should be added that this species, which is 
closest to strigosa, is larger and with much darker and more regular reddish-grey coloured forewings; in one 
specimen the discal area is paler; ordination of markings agrees with strigosa, a pale spot at the inner angle. 
Hindwings pure white only somewhat darker dusted at the apex with interrupted dark marginal line. Underside 
similar to strigosa , hindwings whiter. Palpi more densely haired, body sleeker. The illustration in Vol. Ill is 
not recognisable. 
A. phaedra Hmps. (1 b) is also very close to strigosa but generally somewhat larger; forewings grey- 
white sprinkled with black, black basal streak expanding to cuneiform mark before the antemedian line and 
continuing beyond same; both upper stigmata yellowish-white with dark centres and circumscribed by black; 
the posterior transverse line is only double on the costa, bordered with white inwardly, the anal dart-shaped 
mark behind same very heavy and distinct, blackish dusting above and below same. Fringes black and white 
checked. White hindwings are tinged with brownish-grey, darker at margin and with black marginal spots. 
Described from the Ussuri district; Kasakewitsch and Sutshansk. 
A. phaedriola n. sp. (1 c). From the same locality as the former, Sutshansk, occurring in June and 
therefore with no 2nd generation. Mr. O. Bang-Haas has kindly sent me a species which is very close to 
phaedra but only half the size of same and which is immediately distinguishable by its very dark grey-brown 
hindwings with much more distinct and pronounced angular postmedian and very distinct cliscoidal lunule. 
Fore wings narrower, apex more truncate, reminding one in this respect of the group of small A. niveosparsa and 
omihsiensis. Forewings similarly more darkly and densely sprinkled, the entire marking is much more diffuse 
and suffused whilst otherwise closely resembling that of phaedra. The space between the double transverse lines 
and the markings in the stigmata are not white as in phaedra but of the same colour as the ground. The basal 
streak is quite absent here whilst in phaedra it extends to the discal area even if diffusely and it more or less 
unites with the anal dart-shaped mark. Described from 2 AS ex the collection of 0. B.-Haas. 
A. strigosa Schiff. 
A. chingana n. sp. (T c). A pretty species which is fairly close to strigosa but is very striking by the 
heavily developed tuft on the abdomen on the basal segment. Forewings grey-white in discal area and a darker 
dove grey especially in the basal half; in basal third of the submedian fold a lively ochreous and the same 
colour fills the stigmata and occurs beyond the postmedian; markings otherwise very similar to those of strigosa 
but the black longitudinal streak is absent in the discal area over the sub median nervure; the post-median is 
simple and of the same shape as in psi etc. Hindwings of the <$ white with finely interrupted marginal line, 
very faint discal lunule and traces of a darker postmedian line; in the $ which is darker grey and more heavily 
marked, the hindwings are somewhat darker grey-brown, a narrow whitish border before the marginal line. 
Described from a pair kindly supplied by Mr. 0. Bang-Haas. A type from Inn-Shan, $ from Lin si hien, 
Chingan Mountains in eastern Mongolia. 
A. jankowskii Obth. (1 c). The illustration in Vol. Ill leaves an incorrect impression of this small species, 
for the outstanding white spot at the end of the basal streak is especially characteristic. 
A. cubitata Warr. I have no specimen of this before me. Forewings pale grey mixed with darker and 
shaded more darkly behind the outer line. A thick dark middle line forming an angle within the reniform 
stigma so that same is obscured; sub-basal line indicated by 2 streaks at costa, the double inner transverse line, 
elbowed inwards on the 2 folds and touches the thick black basal streak; the pale grey round orbicular stigma 
has a dark centre and is circumscribed by black. The blackish reniform stigma is circumscribed by black. The 
outer transverse line is almost vertical between the subcostal and uppermedian nervures, then bends inwards 
at a right angle below the reniform stigma, it is white and heavily bordered outwardly with black; the indistinct 
submarginal line is indicated by black cuneiform marks. Fringes black and grey. Hindwings impure white 
with yellow-grey cell spot, outer line and marginal band. Wing expanse A 32, £ 34 mm. From Chabarowsk 
(Ussuri); Pompejefka (in the smaller Chingan). 
A. carbonaria Graes. (= brumosa Leech). 
A. suigensis Mats. (1 c) is classified between the carbonaria and the following catocaloida, from which latter 
it differs however by the absence of the black discoidal lunule on the yellow hindwing. Forewings very similarly 
