( rAC, ) 



(??. Geiial ])rocess triangular. Palpus rather long, rounded in lateral and 

 dorsal aspect, closely ai)i)iessed to head. Eye not lashed. Head with tlie scaling 

 n little raised to a rouiuled crest. Antenna very slender, iiliform, gradually fining 

 distally, hook very gradual, end-segment short, triangular or conical, about twice 

 the lengtli of the previous segment. Spines of abdomen nnmerons, weak, pale. 

 Merum of midco.xa not cariuate behind ; tibiae not spinosc : spurs very uneciual, 

 longer ones over lialf the length of the fir.st tarsal segment, this as long as the 

 four other segments together, and a little shorter t])an the tibia; midtarsus with 

 comb of more or less prolonged spines ; pulvilJns present, large ; i)aronyehium 

 ■with two pairs of lobes. Wings entire. 



<S. Friction-scales of clasjier large. Tenth segment simple. Clasper sole- 

 sljaped ; harpe si)atulate, dilated part dentate on npperside, or reduced, without 

 pi'ocess. Penis-sheath with a right and a left apical process, the left one always 

 dentate at the edges. 



?. Eighth tergite sinuate. Vaginal plate suddenly narrowed as in l)eilejjhila; 

 orifice large, free, edges sliglitly raised. 



Larva (of ruhi(]inot<a), tapering in front, head small, horn slightly curved ; 

 a pale dorso-lateral line from horn forward, pale obli([ue side-bands connected with 

 this line. — Food-plant: \'ifi.-< : Ampelopsis \ ConcoLvnlus. 



Pujia (of rubiciiiinsa), stout, rounded at both ends, cremaster ap])arently thin. 

 Hub. Japan and Amurland southward to North India and the Philippines ; not 

 yet known from tlie Sunda Islands. 

 Four species. 



The name Ampelophaga appeared first in 1852. Bremer & Grey, when 

 describing " .l/«/;f'^oy>'/i«^«" rubiyinosa, did not give any generic distinctions, nor 

 did they even mention that Ampelophaya was meant to be a new generic term. 

 They were again entirely silent on these points in 1854, I.e., so that we believe they 

 did not mean to create a new term, but intended to write Philampelns, a name then 

 employed for a variety of species, especially for American vine-feeders. However 

 that may be, Ampelophaga remained a nomeii indescriptum up to 1881, when Butler 

 gave a kind of definition, and dates therefore from that time. 



The genera Ampelophaga, Beriitana, Ampeloeca, and Darapsa are rery closely 

 allied with one another, agreeing esj)ecially in the antenna being slender and having 

 a short end-segment. The caterpillars are also almost the same ; the peculiar 

 dentition of the harpe of some of the species, and the armature of the penis-sheath 

 point in. the same direction. The afiinities are so strong that we were at first 

 inclined to unite these forms under one generic term {Darapsa). However, 

 the American species on the one side and the Eastern ones on the other form two 

 distinct groups ; these two groups are natural ones, i.e. the difierences express 

 closer blood-relationship of the respective members, as the morjjhical dis- 

 tinctions are corroborated by the geographical distribution, and therefore we 

 have to treat tlic groups as genera. Within the Old World as well as in the 

 New World group tiiere i.s one species more specialised than the others, showing 

 the same kind of specialisation so often observed among the Achevontiiiiac and 

 es])ccially the AmbuUcinae, namely the appearance of sjiines on the tibia (pkolus) 

 and the reduction of the paronychium and acquisition of dentate wings {syriacu). 

 To emj)hasise this development, and (as said below) to facilitate the construction of 

 a satisfactory key to the genera — generally a weak point in systematic works — we 

 treat these specialised form^ also as geuerically distinct. 



