PTYOHOPODA. By L. B. Prottt. 115 



Pt. gracilipennis Warr. Described from a single ^ from Beyrout, in very bad condition. It will gracilipen- 

 perhaps be identifiable by the structure, but hitherto I have not seen any other Palearctic examples which "'^• 

 I can refer to it; it more recalls two or three South African species, such as minimaria Warr. and umbricosta 

 Prout. Antenna evenly ciliated, the cilia little longer than the diameter of the shaft. Hindleg rather small, 

 but with the tibia well thickened; tarsus extremely abbreviated, about one-fourth or one-fifth the length 

 of the tibia. Wing-expanse about as in an average humiliata (19 mm, English system of measuring); wings 

 very narrow, glossy, bone-colour, the markings entirely lost, the costal margin of forewing more reddish. Fore- 

 wing beneath more mixed with reddish; costal margin of hindwing beneath also somewhat reddish. Face red- 

 dish brown. 



Pt. pallidata Schiff. (= byssinata Tr.) (4 d, (J). Noteworthy for the usually strong sexual dimorphism pallidata. 

 in the coloration, which misled Treitschke into describing the $ as a separate species, under the name of 

 byssinata. ^ pale whitish-ochreous with broad darker wavy, parallel lines or bands, between which the ground- 

 colour appears as pale, in part narrower lines. Forewing more or less suffused with ochreous basally; no cell- 

 spot on either wing, nor dark distal-marginal markings. Fringe concolorous. Underside dull ochreous with some 

 blackish dusting, especially on forewing ; a dark discal dot and postmedian line present, also the pale sub- 

 terminal. $ somewhat smaller, white, with the ochreous lines fine and sometimes faint; the under surface, 

 also white, shows corresponding markings to those of the (J, though rather weak. (J antenna with longish 

 fascicles of cilia; hindleg short and weak, the tarsus very short. Egg rather a short oval, with depression 

 on the upper side; yellowish green, the surface dull, the pattern consisting of rather irregular hexagonal 

 pitting. Larva not very elongate, tapering anteriorly, rather flattened, laterally sharply carinated, skin trans- 

 versely folded, segmentation well marked; grey-brown with fine double black dorsal line, strongest on the 

 last 3 segments; subdorsal indistinct except on thorax and last few abdominal segments; 5 V-shaped dorsal 

 marks, their points directed posteriorly; lateral ridge lighter, with black spirac es; ventral area mostly blackish, 

 lighter in middle. Pupa yellow-brown with black incisions and dorsal line and black wing-veins. Imago in 

 May and June. Distributed in Central and parts of North Europe, Central Asia and Siberia ; wanting in a great 

 part of Western Europe. 



Pt. argilata Guen., described from a single $ from Lozere, is according to Staudinger a good argilata. 

 species, and it is remarkable that it has never been rediscovered. GxJBNBE"describes it as near holosericata 

 (dilutaria Hbn.) but larger, with much of the aspect also of deversaria, with which it agrees in size and nearly 

 in shape ; distinguished from both by its very uniform pale greyish-ochreous tone, which is tinged with greenish. 

 The lines are all uniform, slightly waved and parallel, occupying the entire surface as in holosericata; they 

 are rather shades than lines, and only very slightly darker than the ground-colour. Both wings with a small 

 but distinct discal dot. Under surface still more weakly marked. According to Bellier the forewing is more 

 acute than in pallidata, the lines thicker and straighter, less distinct, the palpus ochraceous, not brown; but he 

 only possessed one example of pallidata for comparison. 



Pt. nudaria Chr. (3 h). Uniform dull ochreous, glossy, with very faintly darker median and postmedian nudaria. 

 lines, on forewing rather straight, on the hindwing (at least in the specimen before me) the postmedian incurved 

 between the radials; forewing also with traces of an antemedian line.. Under surface paler, especially of hind- 

 wing, the median and postmedian lines rather better expressed, the costal margin of the forewing a little more 

 deeply coloured than the rest. ^ antenna rather stout, ciliation of medium length; hindtibia short, strongly 

 thickened, tarsus quite short. Christoph, who indicates the presence of "two strong spurs", evidently mistook 

 the middle for the hindleg. Differs somewhat from pallidata in shape, in the fuller ochreous tone, still weaker 

 lines, lack of subterminal, the shorter antennal ciliation, etc. Amurland and Ussuri, originally discovered in 

 the Chingan Mountains in July. — infuscaria Leech (3 h) from Japan and China is a darker, rather better- infuscarta. 

 marked form in which a somewhat pale subterminal line is indicated. Occurs in June and July. The $ is lighter 

 and more ochreous than the ^, but infuscaria is decidedly variable, and although the differences here in- 

 dicated are applicable to all, it is quite possible that more extensive Siberian material will produce examples 

 corresponding to it. 



Pt. obfuscaria Leech is another glossy-winged species, but is of a darker, more blackish brown colour obfuscaria. 

 and even more weakly marked, the lines being indeed scarcely discernible. The fringes are rather lighter. The 

 anal extremity and ventral surface of the abdomen are somewhat less dark, also the legs. The structure 

 agrees with that of the preceding, and as the only two specimens yet known were taken at the same time and 

 place as nudaria infuscaria it seems to me very probable that it may prove to be merely a very extreme aber- 

 ration. Ningpo, 2 <J(J, June and July. 



