86 N. S. ENTOMOLOGICAL SOCIETY 



KEY FOR DETERMINING THE CRAMBINAE OF 

 NOVA SCOTIA. 



E. Chesley Allen. 



The following key and corresponding plate are offered as a 

 supplement to the brief paper on the Crambinae of Nova Scotia 

 published in the last number of the "Proceedings" (Proc. N. S. 

 Ent. Soc. 1917, pp. 92-94) 



The key is based principally upon the color pattern of the 

 fore wing as shown in fresh unrubbed specimens. The condi- 

 tion of the terminal fringes is a fairly reliable indication of the 

 freshness and perfection of the insect. 



Fore wing with little or no pure white 1 . 



Fore wing with pure white in a conspicuous amount 6 . 



1 . Terminal fringe of fore wing golden 2 . 



1 . Terminal fringe not golden 4 . 



2. With silvery, angled, transverse line near outer end of fore 



wing. 



Cr ambus hortuellus 



2 . With no angled silvery transverse line 3 . 



3 . Fore wing with two more or less distinct outward curving 



median lines. 



Crambus ruricollelus 



3. Fore wing without transverse lines 



Crambus vulgivagellus 



4 . Fore wing without transverse lines, and more or less dotted 



with black scales. 



Crambus laciniellus 



4 . Fore wing with two transverse dark median lines 5 . 



5 . Fringe of fore wing cut by fine white gores 



Crambus trisectus 



5 . Fringe of fore wing plain gray or brown 



Crambus calignosellus 



6 . Greater part of fore wing white 7 . 



6. White confined to a longitudional stripe with or without 



additional white patches 10 . 



7 . Fore wing with golden yellow or orange band 8 . 



7 . Fore wing without yellow or orange band 9 . 



8. Fore wing with longitudinal orange band for three quar- 



ters of its length 



Crambus girar dell its 

 8 . Fore wing with terminal fringes and a transverse band gold- 



den y ellow - Argyria auratella 





