LEPIDOPTERA OF NEW YORK AND NEIGHBORING STATES 59 



26. Antennae not swollen, fore and middle legs extending between eyes and antennae; 

 fore femur normally exposed Pterophoridse (p. 639) 



26. Antennae swollen outwardly; fore legs abutting squarely on eyes, middle legs 



sometimes extending between eyes and antennae, fore femur concealed (butter- 

 flies ) - 1 27 



27. Outer angles of maxillae in contact with eyes; tongue often projecting beyond 



tips of wings; pupa normally in a cocoon Hesperiidae (p. 43) 



27. Maxillae separated from tongue; tongue reaching just to tips of wings; pupa 



normally 'exposed 28 



28. Middle legs not reaching forward to eyes; pupa girt about the middle, or 



rarely in a cocoon 29 



28. Middle legs reaching forward to eyes, and often between eyes and antennas; 



pupa suspended by tail only, or rarely in a cocoon Nymphalidae (p. 44) 



29. Tongue falling short of tip of wings, pupa rounded Lycaenidae (p. 44) 



29. Tongue almost always reaching tip of wings 30 



30. Anterior end of pupa with two points Papilionidae (p. 44) 



30. Anterior end of pupa with a single point Pieridae (p. 44) 



31. Fore wings extending far beyond the posterior edge of the fourth abdominal 



segment in the midventral line; fore femora and almost always labial and 

 maxillary palpi exposed; fronto-clypeal suture obsolete; pro thorax notice- 

 ably narrower on mid-dorsal line than at sides; antennae very rarely in con- 

 tact on midventral line 32 



31. Fore wings not extending beyond the posterior edge of the fourth abdominal 



segment; or fore femora and labial palpi concealed, or fronto-clypeal suture 

 distinct ; prothorax usually subquadrate ; maxillary palpi often covered .... 34 



32. Pupa incapable of motion; maxillary and labial palpi concealed. 



Lyonetiidae (p. 148) 



32. Pupa with several free segments; labial palpi exposed 33 



33. Maxillary palpi present; caudal end of body without lateral projections ending 



in spines Yponomeutidae (p. 337 ) 



33. Maxillary palpi absent; caudal end of body with lateral projections ending in 



spines Coleophoridae (p. 202) 



34. Fore wings extending well beyond fourth abdominal segment, or abdomen 



depressed, with incisures much deeper dorsally and ventrally than on sides, 

 and capable mainly of dorso-ventral motion; antennae in contact on middle 

 line; first four segments of abdomen usually longer than the remainder; 

 epicranial suture present, maxillary palpi usually, and femora and labial 

 paipi rarely, present 35 



34. Fore wings not extending beyond fourth segment, or maxillary palpi absent; 



abdomen not depressed and specialized for dorso-ventral motion; first four 

 abdominal segments rarely longer than the others; epicranial suture rarely 

 visible 42 



35. Maxillary palpi absent; no movable segments; a specialized cremaster present; 



pupa suspended and girt like that of a butterfly; tongue as long as fore 

 legs Cycnodiidae (p. 218 ) 



35. Maxillary palpi present, and body capable of dorso-ventral motion, except in 



a few genera which have no cremaster; tongue longer than middle legs, 

 . reaching antennae, except in Ethmia 36 



36. Antennae four-fifths as long as fore wings, meeting only at their apex; labial 



palpi large, maxillaries minute, fronto-clypeal suture complete, strongly 

 sinuate of middle; most of setae hooked .. Yponomeutidas (Scythris) (p. 337) 



36. Antennae reaching almost or quite to tip of wings, coming in contact at two- 

 i: . thirds length of wings, and often diverging again at apex; labial palpi con- 

 cealed unless fore femora are exposed : 37 



37. Antennae not diverging after coming in contact 38 



37. Antennae diverging at apex; three flexible incisures on abdomen 40 



