232 



WILLIAM T. M. FORBES 



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and Eumeyriclda. Hind wing variable in width, typically sublance- 

 olate, with the anal region a little reduced, but more commonly ample, 

 and fully as broad as fore wing; 2d A more or less distinctly forked 

 at base. 



The family is close to the Blastobasidae, but the pecten is never as 

 heavy, there is no stigma at the termination of R 17 the veins do not 

 show any distinct tendency to be grouped at the angles of the cell, 

 and Sc is free from R in the hind wing. 



Larva (fig. 150) typical of the superfamily; head normal in 

 form; all legs present and normal; normally with a biordinal ellipse 



of hooks, broken on the outer side ; 

 typically without secondary setae; iii 

 of abdomen in front of spiracle and 

 slightly higher, single ; head with ad- 

 frontals reaching membrane of ver- 

 tex ; front reaching two-thirds way to 

 vertex; fourth ocellus much closer to 

 third than to lower, second much 

 closer to third than to first. Larvae 

 more or less concealed feeders; usu- 

 ally web or rolled leaf; Endrosis a 

 scavenger. 



Pupa with epicranial suture pres- 

 ent, frontoclypeal imperfect or absent; maxillary palpi large, usually 

 in contact with maxilla?, but labials and front femora concealed ; anten- 

 nae in contact for some distance on the middle line, then normally diverg- 

 ing and exposing the hind tarsi. No hooked setae on venter of ninth 

 segment of abdomen. 



The genus Ethmia (figs. 142, 151) is strongly aberrant in the early 

 stages and slightly so in the imago, and is sometimes made the type 

 of a distinct family, or transferred to the Yponomeutidae. M 2 arises 

 from the middle of the end of the cell, much nearer to M! than to M ;! . 

 R! when distinct, is near the middle of cell or beyond (one-fifth way 

 out normally) and the genitalia are distinctive. The larva has the 

 hooks of the prolegs in a single band; its front is shorter, ending 

 abruptly, and its adf rentals do not reach the vertex; sometimes there 

 are additional hairs in group vii of the abdomen. The pupa has not 

 been studied. The imago of Eumeyriclda shows essentially the same 

 characters. 



The family is large, and primitive for the superfamily, being much 

 better developed in Australia than elsewhere. The Cryptolechia 

 group appears primitive, Depressaria leads to the Geleehiidas, which 

 are very closely related, and Endrosis, to the Blastobasidfe. Most 

 of the Cosmopterygidae appear to be reduced (Ecophoridae. 



FlG. 151. ETHMIA PUSIELLA (EUROPE) 

 SETA MAP. 



