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 bj- a strong crossvein near the 



middle of the cell or beyond (PI. 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 (PI. 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. robinioB, Carpenter-moth] Zeuzera [Z. pyrina. Leopard-moth] Cossus) 



(PI. 9, fig. 211) COSSIDiE 



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.^ 



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



conspicuous color pattern. (Gingla.) CHALCOSilD.S^ 



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

 destitute of scales; females wingless. Bag- worms. (Thyridopteryx [7". 

 epAemercp/ormi*, Bag- worm], Solenobia, Chalia.) PSYCHID.® 



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 motha 

 Diaphania [D.{=Margaronia) nitidalis. Pickle-moth], Loxostege [L. simi- 

 lalis. Garden webwoirn], Pyrausta, Pyralls [P.farinalis, Meal snout-moth], 

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

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

 flour-moth], Plodia [P. interpimctella, Indian meal-moth]) (Including 

 PYRAUSTIDM, GALLERUDM, CRAMBIDM, PHYCITIDM.) (PI. 



10, figs. 223, 230) PyRALIDID-S^ 



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.) 



{EUCLEIDM.) COCHLIDIIDiE 



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. 



(Lagoa, Megalop} ge.) MEGALOPYGID^ 



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

 moths with smoothly scaled wings. (Acol6ithus, Triprocris, Harrisina.) 

 (PL 9, fig. 205) PYROMORPHIL^ 



