58 Key to Families of North American Insects. 



SS. Maxillary palpi four- or five-jointed, folded 84 



Maxillary palpi three-jointed or vestigial, projecting 85 



84. Head only slightly rough behind. (AcrolSpia.) ACROLEPDDJE, part 



Vertex with long, bristly vestiture. (Tinea [T. pellionella, Clothes-moth], 

 Tineok [T. biselliella, Clothes-moth], Xylesthia, Setom6rpha) (PL 9, fig. 



201) TINEIDJE 



85. First and second branches of the media both absent in the hind wing. (Car- 



posina.) TORTRICID^, part 



First branch of the media present in the hind wing 86 



86. Labial palpi with bristles on each side of the second joint, or the vertex and 



the front both with extremely long, rough vestiture, and the second joint 

 of the palpi heavily tufted and the third long (see couplet 84). 



TINEID./E, part 



Labial palpi without bristles; head with short, fairly smooth vestiture, or 

 third joint of palpi inconspicuous 87 



87. Radius and first medial vein in hind wing close together or stalked 88 



Radius and first medial vein in hind wing widely separate at base, at least half 



as far apart as at margin , .... 93 



88. Palpi as long as the head, with the second joint triangularly scaled, third less 



than half as long; normally projecting 89 



Palpi upturned to beyond middle of front, often far beyond vertex, third joint 

 more than half as long as second and upturned 90 



89. Fourth and fifth radial veins separate. (Phaldnia.) 



PHALOXIINjE of the TORTRICIDJE 

 Fourth and fifth radial veins stalked, to costa. (Anarsia <? {A. lineaiella, 



Peach twig-borer].) GELECHIID^E, part 



SO. Veins of fore wing all present; fifth radial vein running to outer margin; wings 

 very frequently ornamented with series of dots contrasting with the ground 

 color. (Atteva, Yponomeftta, Chorefttis, Argyresthia.) 



YPONOMEUTIIXffi, part 



Fifth branch of radius in fore wing running to the costa, or lost 91 



91. Hind wing lanceolate (tapering toward base and apex) narrower than the fore 



wing (see couplet 76) COSMOPTERYGIIXE 



Hind wing wider than the fore wing, not lanceolate 92 



92. Fore wing with all veins from cell arising separately; radius and first medial 

 vein in hind wing long-stalked. (Stendma, Brachilfima.) (XYLORYC- 



TID&) STENOMffijE 



Fore wing with the fourth and fifth radial veins stalked; hind wing trapezoidal 

 and usually wider, strongly rounded out at the end of the third medial and 



first cubital (see couplet 66) A few GELECHIID^ 



$3. Second radial vein arising at the apex of the cell; third medial and cubitals 

 also closely crowded from lower angle; male usually with strong sexual 

 modifications; five radials extending to the costa. (Valentinia, Holcocera, 



Drydpe.) BLASTOBASID>E 



Second radial arising distinctly before the apex of the cell, well away from the 

 origin of the third radial 94 



