276 mCRONIA; PSEUDOMICRONIA. By Dr. A. Seitz. 



ipMaia. A. iphiata Guen. (= pontiata Guen., convexaria Walk.) (22 f). From the strong^ pointed golden broM'n 



apex of the form a white oblique band runs to the centre of the hind margin, gradually widening and being 

 continued over the hindwing, where it becomes broken up and dull in consequence of an admixture of grey. 

 Similar but narrower bands run parallel with it on the hindwing and are found on the forewuag at costal and 

 distal margins. — From Amurland and Japan, distributed southward throughout Eastern and large tracts 

 of Southern Asia, being verj^ come in some places in India; rarer and often local in the Palearctic Region. The 

 moths rest in the brush-woods on the underside of leaves, holding the wmgs spread out as do Geometers, and 

 are flushed by beating bushes at the road-sides and pendant branches of trees. This species is remarkably 

 similar to certain Geometridae and Leucodrepana idaeoides (cf. pi. 48 a), from which it is not distinguishable 

 on the wing. 

 Ihibetaria. A. thibetaria Pouj. (48 f). This form, described by the author as a Micronia, comes close to the pre- 



vious, but the stripes running from the apex and across the disc are only represented by thin brownish grey 

 Imes which correspond to the edges of the stripes. • — Described from 2 q^ from Mupin (Chmcse Province of 

 Sze-chuen) ; the author does not state that the species really occurs in Tibet, but he apparently considers Mupin 

 to be a place in Tibet. ■ — I have not seen the species. 



2. Genus: JHeroiiia Guen. 



This genus, so charateristic of all the Indian forest districts, is only represented in our territory by 

 one species, which is found at the southern boundary. The species extends to our Region only on the Conti- 

 nent; although still common on Formosa, it does not extend to the main islands of Japan. The statements 

 as to the number of species in this genus are very different according to whether one considers all the insular forms of 

 the South-Asiatic Archipelago as one smgle species, or as numerous separate species. The genus is cliaracteris- 

 ed by the palpi being thin, rather long andporrect, the frons flat, the antennae flattened and in the centre 

 slightly incrassate, the legs long and delicate, with the hind femora slightly thickened. Hind tibia with pairs 

 of mid- and end-spurs. Wmgs large, delicate, the forewing pointed with the distal margin cjuite straight, veins 

 2 and 3 on a very short stalk, 6 and 7 from angle of cell, 8, 9 and 10 stalked. Hindwing angulate at vem 4 

 (upper median) ; the distal margin almost quite straight from this angle to the pomted apex on the one side 

 and to the anal angle on the other. The moths repose on the underside of leaves holding the wmgs spread 

 out like Geometers. 

 aculeaia. M. aculeata Guen. (= gannata Guen., sondaicata Guen.) (48 f). This tv^^ical species of the genus is milky 



white, the wings being minutelj' pencilled with golden brown; from the costal margin of the forewing to the 

 abdominal margin of the hindwing run 3 parallel grey shado\vy stripes; in front of the tail of the hindwing a 

 black spot, near which there are some black dots at the distal margm. Underside plumbeous grey in (^, white 

 in $, withovit markmgs. — In India, on the Sunda Islands, throughout Southern Chma, on Hainan, Formosa, 

 etc., very common; it is hardly possible to M'alk through brush-wood late in the season (July to November) 

 without flushing some specimens. — Indian examples have the wings rather longer and more pointed than 

 my Chinese ones; the latter, moreover, are very minutely pencilled. 



3. Genus: PKOudoiiiioroiiia Moore. 



The species of this genus come very close to Micronia and have the same Geometrid facies, strongly 

 recalling Ourapteryx, from which they are at once distinguished by the larvae having 16 feet. The colour of 

 the few forms which belong here is white with dull grey or light bronze-brown transverse stripes across both 

 wmgs; the wings are exceedingly delicate. 



Head small, frons broad. Eyes small, black. Palpi short but strong, porrect. Antennae flattened, 

 not visibty mcrassate at the apex. Body delicate. Mid tibia with 1 pair, hind tibia with 2 pairs of spurs. Ab- 

 domen very short, in $ hardly reaching the middle of the abdominal margin of the hindwing. Wmgs shaped 

 almost as in Strophidia, particularly in the Indian species, M'hereas the tooth of the hindwing is shorter in the 

 Palearctic species. The genus differs from the very similar Micronia m the lower and middle median vems 

 of the forewing coming from a point in the (J and separating at once, while they are stalked, though rather shortly, 

 in Micronia. The moths are usually abundant : they rest in daytime on the underside of the leaves of young 

 trees; they easUy fly away, but settle again exactty like most Geometridae at a distance of 10 — 20 metres in 

 a similar place, and are therefore easily caught. 

 archilis. P. archilis Oherth. (= soror AlpTi.) (48 f). White, the wings in the costal area with luimerous transverse 



stripes, of which many extend to the hind margm. The transverse stripes of the hindwing particularly distuict 

 in the basal and distal-margmal areas; in the central area 1 or 2 grey arcuate shadows. Easily distmguished 

 from the verj^ similar Indian P. coehM Moore, which is the same in size, and the Geylonese fraterna by the much 

 shorter and less strongly spotted tooth of the hindwing. The figure given by Oberthur, which has the ground- 

 colour pinkish grey, is apparently quite erroneous, for it does not agree with the description, in which the upper- 

 side is called "white" and the underside "entirely white". Occurs in Sze-chuen and extends northward to Kan- 

 su, where it has been found in September. OBERTHtJR gives Tibet as patria, but adds "Ta-tsien-lu", which is not 

 situated in Tibet but in Western China, being separated from the very distant Tibetan frontier by the Siin-lmg. 



