220 



CIDARIA. By L. B. Prout. 



phaiosata. C. phaiosata Stgr. (8 1). According to Staudinger the genitalia of the (f (which I cannot compare) 



show that it belongs to the present group; otherwise I should have inclined to refer it to the neighbourhood 

 of vendearia Ob. (subgenus CaJostigia). I believe our specimen is correctly determined. cT antenna with longish, 

 well separated pectinations (only one pair to each joint?). Forewing grey-brownish, the markings formed of 

 wavy dark lines, the median band being only indicated by two or three proximal and two or three distal 

 ones: subterminal line sometimes accompanied by some thick black wedge-shaped marks. Forewing beneath 

 with discal dot and postmedian line; hindwing here with the postmedian row of dots more distinct and the 

 basal half of the fringe darkened. Koko-Nor. 



.Subgenus Chloroclysta Hhn. Differs from Cidaria in the long palpus and in the larva. 



siterata. C. siterata Hufn. (= psittacata Shn., viridifasciata Goeze, rubroviridata Doti.) (8i). This species and 



the following differ from all. the rest of the group in their green colouring and in their hibernating stage- 

 siterata is variable, but is distinguished by its dark hindwing and nearly always by having some admixture 

 of red in the forewing. The green colour is also deeper than that of miafa and a costal or subcostal spot 

 distally to the median band generally purer white. Distributed through most of Europe, Asia Minor and 

 Transcaucasia. Larva very long and slender, the thorax slightly less thin, the anal points well developed; 

 green, the thorax with a red dorsal line, abdomen with a red dorsal spot on each segment; legs and anal 

 points tipped with red. On various trees, June-August. Pupa slender, yellow-brown with a delicate purple 

 bloom, dotted with black; cremaster darker. The moth appears towards the end of August and hibernates. 



miata. C. tniata L. (= coraciata Hhi., viridulata Zeti.) (8i). Forewing green, easily fading to a dirty yellowish, hind- 



wing dirty white, dusted with green, especially in its distal part. Not very variable. The larva is similar to that 

 of siterata but perhaps even more slender and more perfectly cylindrical and usually with the most conspicuous 

 red (or red-brown) markings ventral, not dorsal. On various trees. Pupa slender, light brown with a delicate 

 purple bloom. In a very sUght cocoon on the ground. The times of appearance and the geographical distribution 

 nearly agree with those of siterata, but miata is perhaps wanting in Spain and Asia Minor, while on the other 

 hand it occurs in Corsica, N. Italy and the Ala Tau district. 



Subgenus Dysstroma Hhn. (= Polyphasia Steph.). Essential characters of Thera, average size larger 

 median area usually broader, cf antenna not bipeetinate, larva more slender, not attached to Coniferae. 



corussana. 



C. corussaria Ob. (8 k). A pretty species and, so far as I know, not very variable. The shape of the 

 median band distinguishes it at once from the other species, even in the rare cases when they approach it 

 in coloration. Hindwing in strongly marked specimens with a distinct, bluntly angled postmedian line. Under 

 surface similar to that of truncata, except that the postmedian line of the forewing follows almost the same 

 course as above and that the cell-spots are smaller. S. E. Siberia and Japan. 



latefasdata. C. latefasciata Stgr. Near truncata, on an average a little larger, moore smoothly scaled, the median 



area similarly shaped, on an average broad, but variable, its colour whitish, sometimes more or less dusted 

 with blackish-grey or brownish. The most characteristic features are a rather large white spot on the hind- 

 margin of the forewing between the basal area and antemedian line, the absence of distinct red-brown subbasal 

 shading, and a very strong blackish clouding in the distal area obscuring the middle of the subterminal line 

 and meeting the apical streak on the one hand and the dark-clouded anterior distal part of the median area 

 on the other. Discal dot rather large, often merged in the line which follows it, Hijidwing uniformly grey, 

 or slightly darkening distally, sometimes showing feebly the pale spots which become so distinct in concinnata. 

 Fringe distinctly dark-spotted. Beneath marked more like citrata, liindwing rather darker. Blocker claims 

 that tins is a good species and takes it in old fir-woods near St. Petersburg at the time when truncata is getting 

 worn and citrata beginning to appear — end of July and first half of August. Commoner in the mountain 

 districts of SU^eria. 



planifas- 

 ciata. 



C. planifasciata spec. ?wf. (13 e). .Median afea shaped nearly as citrata but broader. Wings more glossy. 

 Forewing with subbasal and antemedian lines less angulated but more oblique, clearly defined, with brownish 

 shade between them; median area white, someliiues with a delicate tinge of brown; a slender dark band 

 distally to the antemedian and a broad costal half-band proximally to the postmedian; discal dot about as in 

 citrata; distal area on an average less strongly marked than in truncata and citrata. Hindwing grey or 

 whitish-grey, very weakly marked. Fringes weakly or scarcely dark-spotted. Under surface nearly as in 

 citrata, the postmedian line of the hindwing on an average placed rather further distad, not (as in many 

 citrata) indented before the 2"** radial. Kashmir: Koksar, etc., July-September. Type cf and a ? in my 

 collection, another pair in that of the British Museum. 



