S TIG MO NO TID^—A S THENIA . 



173 



minute, closely clouded, yellow lines ; just before the 

 middle is a complete silvery transverse slender stripe rather 

 bent below the costa, and beyond it another similar but still 

 more slender ; beyond these are three silvery-white costal 

 streaks, below them another — and a small one runs out into 

 the cilia — which are dusky white. Hind wings smokj'-- 

 brown, with white cilia. Female similar. 



On the wing in May and June, and a second generation 

 in August. 



Larva varying from ochre-yellow to pale green ; head 

 and dorsal plate red-bi'own ; spiracles not ringed. In 

 autumn in resin-cells on fir, which are only smaller than 

 those of Bctinia resinella ; pupating therein. (Ratze- 

 burgh.) It seems certain, however, that it actually feeds in 

 the resin-cells of that species. Mr. McArthur assures me 

 that he has seen the larva of this species so feeding. Mr. 

 Salvage says further: "I have obtained larvae feeding in 

 various ways, and they do not seem to be at all particular 

 as to the method adopted. I have bred them from the 

 excrescrences of Betinia resinella freely, from those of PhycAs 

 ahietella, from galls, from small excrescences on young firs, 

 and from resinous exudations on old fir trunks." 



A very lively species, flying in the hot sunshine at mid- 

 day and in the afternoon about the tops and branches of 

 fir-trees, especially young Scotch firs. A local species with 

 us and very rare in England, though it has been taken in 

 Cumberland and North Lancashire, and Mr.iE. A. Atmore 

 has once taken a specimen at King's Lynn, Norfolk. Far 

 more frequent in Scotland, occurring in the Edinburgh 

 district and at Renfrew ; but in far greater abundance in 

 Perthshire, Aberdeenshire, and Moray. Abroad it is com- 

 mon throughout Central Europe and a large portion of 

 Northern Europe. 



3. A. scopariana, H.-S. — Expanse | inch (10 mm.). 



