MEGAMETOPON: PTEROTOCERA; DASYPTEROMA; PHIGALIA. By L. B. Prout. 353 



Publ. 2. VI. 1915. 



purple, lateral and part of ventral bright yellow. Polyphagous on deciduous trees ; next to brumata their greatest 

 Geometrid enemy. Moth from November to February, mostly before Christmas. Europe and Armenia. 



E. declinans Stgr. ^ antennal structure as in the 3 preceding. Size of defoliaria, forewing somewhat decUnans. 

 narrower, colour and markings reminding somewhat of Chesias rufata. Light ash-grey to dark grey, variable 

 in the strength of the markings. Forewing with basal area sometimes darkened, or with 2 black streak.s, 

 median band indistinct, interrupted, often wanting, cell sometimes filled in with blackish; postmedian band 

 brown, well developed, usually bounded proximally by a black postmedian, distally reaching the pale sub- 

 terminal line. A terminal row of dots or dashes. $ apterous, similar to rfe/o^wr»a.. Asia Minor; E. Rounielia: 

 Slivno. 



E. Joccataria Erscli. is still almost unknown. Founded on a $ similar to that of defoliaria, but occataria. 

 larger, perhaps greyer, the stumps of wings not quite so minute, dorsal dots of abdomen smaller. Near Samar- 

 kand, 27 February. - 



100. Genus: Megametopon Alph. 



Unknown to me except from the description. Possibly belongs to the present group. Face extra- 

 ordinarily protuberant, with an obtuse horny prominence above and 3 horny points at its extremity. Palpus 

 short. Tongue wanting. Antenna in ^ bipectinate with long branches. Only the type species known. Differs 

 from the Indian Prometopidia Hmps. in the pectinate antenna and absence of tongue. 



M. piperatum Alph. (25 c). Forewing subacuminate, yellowish cinereous irrorated with grey, the lines piperatum. 

 fine, not very sharp, antemedian a little oblique, postmedian sinuous, from middle of hindmargin to three- 

 fourths of costa; sub terminal line not very distinct, not lunulate. Hind wing very weakly marked, the lines 

 showing only towards inner margin. Kan-su: Chin-Tassy in July. $ unknown. 



101. Genus: Pterotocera Stgr. 



Akin to Erannis, differing chiefly in the very long pectinations of the ^ antenna and that the 

 first 2 segments of the abdomen are strongly spinose dorsally. In the sole example before me I cannot 

 discover a definate thoracic crest. $ unknown. Only one species. 



Pt. declinata Stgr. Forewing dingy dark grey, with some scattered light ochreous-brown dusting, ded.irm.ia. 

 especially on the veins; subbasal and antemedian dark lines weak, an ill-defined light ochreous-brown post- 

 median line or narrow band, the veins between this and the whitish, proximally dark-shaded subterminal 

 ochreous-brown. Hindwing lighter grey, unmarked. Forewing beneath shining dark grey with brownish 

 .subapical tinge; hindwing with distinct cell-spot. Syr-Daria to the Tarbagatai district. Somewhat recalls 

 E. declinans but larger, with quite different antenna, etc. 



102. Genus: Dasypteroina Stgr. 



Founded on 3 bred $$, perhaps not even Geometrid. Legs hairy. Foreleg different from those of 

 all others, the coxa and femur broad, the latter only a little longer than the former; tibia excessively short, 

 with a spine at the end almost as long as itself; 1st tarsal joint verj'' long. The other femora also broad; 

 hindtibia with 4 short spurs. Tongue vestigial. Ovipositor long. Wings linear, hairy anteriorly and posteriorly, 

 scarcely as long as the body. 



D. thaumasia Stgr. (19a). Light wood-brown or brown-grey, with darker spots. Castile: San Ilde- ihaumasia. 

 fonso. 



103. Genus: Phigalia J^up- 



Face hairy. Palpus minute. Tongue short and slight. Antenna in ^ bipectinate. Pectus hairy. Ab- 

 domen spinose. Hindtibia with all spurs present. Wings in ^ somewhat stronger than those of Erannis; 

 forewing with 1st subcostal arising from 2nd, running into costal, or more rarely with the two last-named 

 anastomosing, so that the vestige of 1st subcostal is lost; hindwing with cell elongate, 2nd radial present 

 but rudimentary. $ apterous. Larva moderately stout, rugose, with pairs of humps on the abdominal seg- 

 ments, those on the first 2 or 3 segments particularly conspicuous. 



Geographical distribution: Palearctic and N^arctic. 



Ph. pedaria F. {— pilosaria Schiff., hyemaria Bhh., plum9.ria Esp.) (19c). ^ grey with a more or pedaria. 

 less strong olivaceous tinge, sometimes mixed with some ochreous or with some whitish scales. The Imes variable, 

 thickened and darkened at the margins. $ stouter than that of E. defoliaria, with longer ovipositor, dorsally 

 more or less brownish, abdomen spinose. — ab. extinctaria Stndf. is a paler, almost unicolorous form of eaiinctaria. 

 the (J. — ■ ab. monacharia Stgr. is unicolorous blackish or even quite black. Chiefly from Yorkshire. — The monacharia, 

 IV 45 



