gracilauia] TINEIDAE 751 



12. Apex of costal blotch emitting an oblique streak 



2. stigmatella. 

 „ ,, „ not emitting a streak 



4. falconipe^mella. 



13. Costal blotch margined anteriorly by a dark fascia 



3. hemidactyleUa. 

 „ „ without dark fascia . .14. 



14. Costal blotch sharply defined . .1. alchimiella. 



„ ,, indistinct or obsolete . 7. elongella. 



1. G. alchimiella, Sc. (swederella, Thnb.) 10-13 mm. Fore- 

 wings purplish - ferruginous ; dorsum suffused with yellow to- 

 wards base ; a large triangular yellow median costal blotch, 

 apex often rounded. Hindwings dark grey. 



Britain to Perth, Ireland, common ; Europe, N. America ; 

 5, 8. Larva whitish; dorsal line dai'k greenish - grey ; head 

 yellowisli, brown-marked : within conically rolled leaves of 

 oak ; 7, 9. 



2. G. stigmatella, F. 12-14 mm. Forewings red -brown, 

 darkest towards costal blotch ; a triangular white median 

 costal blotch, usually mixed with brown -reddish, on costa 

 marked with several blackish dots, apex emitting a slender 

 outwardly oblique streak towards dorsum. Hindwings grey. 



England to Durham, N. Ireland, common ; Europe, WC. 

 Asia to Turkestan ; 9-5. Larva green-whitish ; head yellowish, 

 brown-marked : within conically rolled leaves of Salix and 

 popjlar ; 8, 9. 



3. G. hemidactyleUa, /'. 12-14 nmi. Forewings light 

 ochreous-yellowish, mixed and strigulated with red-brown ; 

 a large triangular paler median costal blotch, on costa 

 marked witli several blackish dots, anteriorly margined by 

 a suffused dark reddish-fuscous fascia. Hindwings grey. 



SE. England to Dorset and Norfolk, Cheshire, Westmore- 

 land, S. Ireland, local; C. Europe; 9-5. Larva pale yellow- 

 greenish ; dorsal line dark green ; head paler : within conically 

 rolled leaves of sycamore ; 7, 8. 



4. G. falconipennella, Hh. 12-14 mm. Forewings dark 

 reddish-fuscous irrorated with whitish ; margins and fold 

 dotted with black ; an indistinct whitish triangular costal 

 blotch before middle. Hindwings dark grey. 



Kent, Surrey, Hereford, scarce and local ; C. Europe, N. 

 America : 9-4. Larva within folded leaves of alder ; 7, 8. 



5. G. semifascia, Ihr. 10-12 nun. Forewings reddish-fuscous, 

 often mixed with pale yellowish ; an oblique ochreoiis- white 



