50 Key to Families of North American Insects. 



12. Subcosta and radius of hind wing independent, parallel or arising separately; 



connected by a crossvein or rarely fused beyond the cell 13 



Subcosta of hind wing, arising from the cell (PI. 9, fig. 205) 18 



13. Subcosta and radius of hind wing connected by a strong crossvein near the 



middle of the cell or beyond (PL 9, fig. 211), independent and parallel. . .14 

 Subcosta and radius of hind wing of a different conformation 17 



14. Fore wing with an accessory cell (PL 9, fig. 211) 15 



No accessory cell 16 



15. Wings bluntly pointed toward tips, strong; body heavy, far exceeding the hind 



wings when spread; palpi vestigial; usually large moths. (Prionoxystus 

 [P. robinice, Carpenter-moth] Zeuzera [Z. pyrina, Leopard-moth] Cossus) 



(PL 9, fig. 211) COSSIIXE 



Wings broad, rather short and rounded, body short and slender, not exceeding 

 the hind wings; palpi well developed; moderate-sized moths, with hairy 

 body and usually of yellow or orange color. (Dalcerides.) . .DALCERID./E 



16. Tongue developed; palpi and wings scaled; moderately large moths with 



conspicuous color pattern. (Gingla.) CHALCOSHD^E 



Tongue absent; palpi small and hairy, or absent; wings hairy, but nearly 

 destitute of scales; females wingless. Bag-worms. (Thyrid6pteryx [T. 

 ephemeraformis, Bag-worm], Solen&bia, Chalia.) PSYCHHXaS 



17. Subcosta arising separately from the radius, running closely parallel to it to 



well beyond the end of the cell; base of the radius in that case either com- 

 plete, showing as a short spur, or lost; small, rarely moderate-sized moths 

 Diaphania [D.(=Margaronia) nitidalis, Pickle-moth], Lox6stege [L. simi- 

 lalis, Garden webworm], Pyrausta, Pyralis [P.farinalis, Meal snout-moth], 

 Crambus [Root webworms], Galleria [G. mellonella, Bee-moth], Mineola 

 [M. indigeneUa, Leaf-crumpler], Ephestia [E. kuehniella, Mediterranean 

 flour-moth], Plddia [P. interpunctella, Indian meal-moth]) (Including 

 PYRAUSTIDM, GALLERI1DM, CRAMBIDM, PHYCITIDM.) (PL 



10, figs. 223, 230) PYRALIDIIXE 



Subcosta entirely independent of the radius, or connected by a weak crossvein, 

 or one near the base of the wing, sharply divergent before the end of the 

 cell 58 



18. Subcosta arising from near the middle of the cell; sometimes free also for a 



short distance near the base; moderately small, stout-bodied moths with 

 rather small wings; larvae slug-like. (Euclea, Tortricidia, Packardia.) 



(EUCLEIDJE.) COCHLIDilDjE 



Subcosta arising near the tip of the cell 19 



19. Fifth branch of the radius long-stalked; pale-colored moths of moderate size 



and inconspicuous appearance, with stout, hairy body and small, furry wings. 



(Lagda, Megalop} ge.) MEGALOPYGIDJE 



Fifth branch of radius arising from the cell; small, dark, often brightly marked 

 moths with smoothly scaled wings. (Acolfiithus, Triprocris, Harrisina.) 

 (PL 9, fig. 205) PYROMORPHIL^ 



