THE CANADIAN ENTOMOLOGIST. 37 



NOTES ON SOME NORTH AMERICAN YPONOMEUTID/E. 



I3V HARRISON (;. DYAR, WASHINGTON, D. C. 



Family Yponomeutid,«. 



Spfiopsis of North American Genera. 

 Hind wings with veins 3 and 4 stalked or united. 

 Hind wings with vein 4 present. 

 Veins 6 and 7 separate. 



Antennas of male thickened with scales toward 



base Walsinghamia. 



Antennai of male not thickened with scales. 



Second joint of palpi tufted Choreutis. 



Second joint not tufted, but rough scaled. 



Hind wings elongate ovate or narrow ob- 

 long Glyphipteryx. 



Hind wings short ovate or trigonate. . .Simcei/iis. 



Veins 6 and 7 stalked Setiostottia. 



Hind wings with vein 4 absent Yponomeuta. 



Hind wings with veins 3 and 4 separate, rarely connate. 

 Palpi not tufted, smooth, upturned. 



Hind wings with the cross-vein of cell strongly angled .. J//<?5^z. 

 Hind wings with the cross-vein straight. 



Palpi reaching above the middle of the front .# Atteva. 



Palpi not reaching the middle of the front . . Trichostibas. 

 Palpi with the second joint tufted below or porrect and hairy. 

 Third joint smooth, sharp pointed, distinct. 

 Veins 6 and 7 of hind wings stalked. 



Veins 7 and 8 of fore wings stalked. 



Apex of fore wings pointed Cerostotna. 



Apex of fore wings falcate Periclyvmiobius. 



Veins 7 and 8 of fore wings separate Trachoma. 



Veins 6 and 7 of hind wings separate. 



Veins 7 and 8 of fore wings separate Plutella. 



Veins 7 and 8 of fore wings stalked Eido. 



Third joint concealed in hair or porrect, not smooth. 



Veins 6 and 7 of hind wings stalked Euceratia. 



Veins 6 and 7 of hind wings separate. 



Fore wings with 1 1 veins Pterokmche. 



Fore wings with 12 veins. 



