122 
CIDARIA. By L. B. Prottt. 
derdij era. 
punctumno- 
iaiu. 
alexandrow- 
sJcana. 
sirigulala. 
marmoraia. 
fulvipennis. 
ftavidula. 
korbi. 
punciumno- 
iat.a. 
ochreogrisea- 
1a. 
pjanifascia- 
1a. 
corussaria. 
punclnmno- 
lata. 
roiundaie- 
fasciala. 
singularia. 
€. demtifera Warr. (11 g), described from Sikkim and only touching the Palaearctic Region in N. W. 
India, is very much like a large citrata with still more projecting postmedian line, and was formerly assumed ta be 
a race of that species, but the genitalia show several differences — tegumen narrower, tip of uncus not scaphoid, 
valve of more equal breadth, aedoeagus longer and more slender, etc. The type was described as having the 
band dirty yellow. — ab. punctumnotata (nom. coll.) nov., with the median area white, is also known. — alex- 
androwskana Matsumura (11 h) founded on a $ from Alexandrowsk, N. Saghalien, collected on 28 August, 
seems to have a more olive-brown tone than most of the Palaearctic specimens hitherto known, but Heyde- 
mann believes that the name may be employed for the entire race which ranges from Szechuan and the N. E. 
corner of Tibet through N. China to Saghalien and which has been proved by the genitalia to belong to dentifera. 
They have in general a somewhat more extended basal area and narrower, more sharply dentate and angled 
antemedian band than the citrata tibetana forms which occur with them. — ab. strigulata Heydem., not rare 
in W. and Central China, has the median area and apex more strongly irrorated with black-brown. — ab. 
marmorata Heydem. has also an admixture of white in the median area, bringing about an increased resemblance 
to citrata , from which they may be distinguished by the stronger cell-streak of the forewing and the unicolorous 
brownish smoke-grey hindwing. Occasional in Szechuan and Central China. 
C. fulvipennis Hmps. (11 h). Distinguishable at a glance from all the rest by its ochreous hindwing. 
In Hampson's type form the median area of the forewing is dark-mixed. — ab. flavidula Bastelb. (13 a) corres¬ 
ponds to the punctumnotata form of the allies in having the median area of the forewing predominantly white. 
Only known from Kashmir, the type series from Cfurais Valley. 
C. korbi Heydem. (11 h), earlier mistaken by Korb and Osthelder for latefasciata, by Pungeler and 
me for a citrata form, is really quite easy to recognize. The general pose of the markings, including the pale 
(but yellow rather than white) costal spot, is much as in citrata , but the broad median area bears little or no 
markings (except the usual dark streamer from costa) and even the cell-dot is minute. The latter character, 
the somewhat less glossy wings and the much less straight antemedian distinguish it from planifasciata Prout 
(Vol. 4, pi. 13 d), which in some respects it somewhat recalls. The type form has the median area of the forewing 
grey-dusted. — ab. punctumnotata Heydem. has the median band broadly whitish, only at the costa and the 
sides finely irrorated with grey. Amur and Ussuri, the typical series of both forms, June and July; Gensan; 
Transbaical. 1 also a few localities in Japan: Hakodate (June—July), Oiwake (October), etc. 
C. ochreogriseata Heydem. Size of the smallest korbi (length of a forewing 14 mm), evidently inter¬ 
mediate between that species and planifasciata. Probably more glossy than korbi, the cell-dot equally minute, 
the median area in the unique type densely powdered with grey, its posterior end strongly narrowed, marked 
with a darker grey spot; hindmargin with a strong ochreous spot, formed as in cinereata, japonica and proavia 
(11 e). Hindwing unmarked, silky grey-yellow, lightening towards the base. Szechuan, l apparently without 
exact locality. 
C. planifasciata Prout, (Vol. 4, pi. 13 d). The smooth, glossy appearance was not sufficiently stressed 
in the original description; the broad median area is even clearer than in korbi, which see for further distinctions. 
When first my attention was called to this species in the British Museum, nearly 30 years ago, I suggested that 
it might fit Stattdinger's description of latefasciata, which species I did not then know. Heydemann is quite 
correct in saying that the two have little in common, either in resemblance or relationship. 
C. corussaria Oberth. (Vol. 4, pi. 8 k). I have already remarked that this is a somewhat outstanding 
species. It is therefore not very surprising that Heydemann has found the genitalia “very aberrant and dif¬ 
ferently built from all the rest of the Dysstroma species”. The commonest form in E. Siberia (loc. typ.) and 
Japan seems to be that in which the median area is more or less markedly irrorated with grey. — ab. punctum- 
notata Heyclem., with the median area white, occurs with it occasionally, but it is interesting that it becomes 
almost constant in Szechuan; at least an enormous series from the Oberthur collection consists almost ex¬ 
clusively of this form. Matstjmfra records corussaria from S. Saghalien. 
C. rotundatefasciata Heydem. A very peculiar species which, in the absence of anatomical investiga¬ 
tion. is provisionally placed next to corussaria. The markings somewhat suggest a Thera and it is interesting, 
in this connection, to notice that the $ valve of corussaria has actually some resemblance to that of firmata. 
Palpus hairy. Only the type known, a $ from Ta-tsien-lu. 
C. singularia Heydem. (13 b). The only known example, a $ in the Pungeler collection, from Koko- 
Nor, has not been examined anatomically, but is certainly very distinct. Length of a forewing 14 mm. Striking 
on account of the characteristic clear markings of the forewing and its almost uniform grey-olive colour; the 
extreme posterior tapering of the darker olive-grey median band, caused by the very oblique course of the 
antemedian, creates a slight suggestion of a member of the Sauris group, a suggestion which is perhaps enhanced 
by the dark mark (1.5 mm broad) in which this band ends; the outward sweep of the postmedian in its anterior 
part is strong, but less extreme than in the citrata group. Hindwing shining dirty-white, at the termen slightly 
dusted with grey; the convex (not angled) postmedian showing through faintly from the underside. 
