208 



EUSTROMA. By L. B. Prout. 



middle of the wing from the 2"'' line to the 6*, or beyond, while the costal part of the 4"' and 5* lines is 

 obsolete, leaving a large dark costal blotch between the 3'''^ and e**" lines. — Larva slender, tapering gradually 

 to the head ; pale green with interrupted dull red mediodorsal line and white subdorsal, spiracles dull yellow, 

 tubercles and setae black. On hnpatiens noli-tangere; full-grown in September or October. Papa short and 

 stout, glossy, head, thorax and wings bright transparent green, abdomen golden-brown with darker incisions, 

 a green dorsal line, a red-brown spot near anal end. The moth appears throughout July and is distributed 

 in Europe, Siberia and W. China. 



iiiextricala. E. inextricata Walk. (^ aerosa Btlr.) (1 3 a) is similarly marked to re^icwfoto, but very distinct. Larger, 



forewing with distal margin less convex, more oblique, the grey parts of the ground-colour replaced by yellow, 

 ] ^' line more oblique, usually meeting the angled 2'"^ line before the hindmargin, the long-oval dark blotch 

 at middle of hindmargin not divided into two by a white line, 4"* and 5"^ lines anteriorly almost or quite 

 parallel, 7*'' line (subterminal) more deeply lunulate-dentate, 4**' subcostal vein towards apex as white as the 

 others; hindwing also more tinged with yellowish, the rounded orange discal patch of scales of reticulata 

 replaced by a more elongate black patch on the subcostal vein. N. India and W. China to Japan. 



aurigena. E. aurigena Btlr. (13b). Size of reticulata; more glossy, forewing strongly suffused with bronzy green, the 



fuscous median patch much narrower, the narrow grey bands of reticulata being replaced by much broader 

 green ones, which are divided at costal margin by additional white lines, subbasal fuscous patch similarly 

 divided, so that there are at least 10 white lines costally; postmedian line anteriorly and apical streak rather 

 thick. Hindwing glossy fuscous, cf antenna with longer ciliation, cf hairtuft concolorous with under surface, 

 no tuft on hindwing above. Kashmir, etc. 



fissisignis. E. fissisignis Btlr. (= reticulata Moore nee Schiff., = chrysoprasis Oh.) (101 as chrysoprasis) nearly agrees 



in structure with reticulata; though the palpus is longer and the tuft of orange-brown scales on the upperside 

 of the cf hindwing more elongate. Superficially very distinct in its much larger size, more elongate wings 

 and different colour and pattern. Ground-colour above and beneath fawn-colour, the hindwing above predo- 

 minantly white; the blotches on the forewing above blackish brown with a slight olivaceous tinge. Both wings 

 beneath with dark cell-spot and thick postmedian line, that of the hindwing dentate; forewing in addition 

 with a blurred dark suffusion in the median area or sometimes with the dark blotches of that area formed 

 nearly as above. W. China: Ta-chien-lu and Pu-tsu-fong, June-July. Also in Sikkim and Indian Tibet. 



fractifasci- E, fractifasciaria Leec/* ( 13 d). Similar to the preceding but rather smaller and with the dark markings 



aria, differently arranged; those nearest to the base much narrowed, the next restricted to dark costal marks; the 

 costal spot of the median area less uniform in size and shape, the posterior blotches united into one; no 

 conspicuous dark spots distally to the median area, only a weak darkening towards the distal margin; pale 

 subterminal line much better developed than in fissisignis and deeply lunulate-dentate. Hindwing rather darker 

 than in fissisignis with distinct black discal dot on upperside. The unique <f is worn, the orange tuft on 

 upperside of hindwing wanting (perhaps abraded). In the same localities as the preceding; May-July. 



propriaria. E. propriaria Leech (13 d). Related to the two preceding, structure as in fissisignis, size of fractifasci aria. 



Ground-colour similar or sometimes rather more reddish. The black-brown colouring is restricted to two 

 thick lines or narrow bars which limit the central area and two fine lines which traverse it; otherwise the 

 markings are red-brown and consist only of a basal patch, median band and some indistinct spots distally to 

 the subterminal ; median band entire, variable in width (rather narrow or moderate, widest anteriorly), its edges 

 indented at the folds — in one example with the part distally to the submedian fold quite isolated as in 

 Cidaria silaceata ab. insiilata] subterminal line very indistinct, mostly broken into dots. Hindwing white some- 

 what suffused with grey and with a grey postmedian line. Under surface somewhat suffused with grey from 

 the base to the postmedian line, especially on the forewing; discal marks somewhat elongate. In the same 

 localities as the two preceding; iMay — July. 



melancho- E. melancholica Btlr. (= chlorovenosata Chr) (7 I) differs from the preceding group in the absence 



lica. of the orange scale-tuft on the hindwing; the hair-pencil on the forewing beneath is yellowish and the palpus 

 is long, so that, but for the non-angulate discocellulars the species would belong to Lggris. Superficially 

 melancholica strongly suggests a large, long- winged Cidaria silaceata; indeed with the exception of the larger 

 size and relatively rather longer wings and the cf hair-pencil I can iind scarcely any constant differences, 

 but the much more deeply angled antemedian Ime of melancholica should suffice; as a rule, the ground-colour 

 is more dusted with bright yellow, the wedge-shaped markings between the postmedian line and the apex are 

 longer and the discal spots larger and placed much nearer the antemechan line. Variable in colour. Butler's 



