120 



Trphroaia Boisd. (in part), Gen. Intl., 198, 1840 



Dup. (in part), Cat., 228, 1844. 

 Boarmia H.-Sch. (in part), Sobm. Enr., iii, Tti, 1847. 

 Steph., Cat. Br. Lep., 174, 1850. 



Lrclrrcr (in part i. Writ. Bot. Zool. Ges. U ten, 177, 1853. 



Tephrona Guen. (in part), Pbal., i, 258, 1857. 



Walk, (in part). List Lep. Het. Brit. Mns., xxi, 398, I860. 



Front of thf head rather square. Palpi very stout and thick, scarcely 

 passing beyond the trout (71 canadaria), or slender, with the third joint acute 

 and passing a little beyond the front (71 cognataria). Male antennae well 

 pectinated, plumose. Fore wings with the costa straight, usually straighter 

 than in any other genus of the subfamily. Apex rectangular, subacute ; outer 

 edge of the wing not bent. Hind wings rather square, with a slight, bend in 

 the middle of the outer edge, slightly dentate in T. canadaria, usually entire; 

 apex slightly produced Venation: usually but five subcostal venules (six in 

 71 californiaria, plate 5, fig. 2 b), where there are usually six in Cymatophora; 

 the first and second median veins arise farther apart than in Cymatophora. 

 No subcostal cell. Hind legs long and slender, either with the male hind 

 tibia? slender and the tarsi three-fourths as long as the tibiae (71 cogna- 

 taria), or the hind tibia; are very long and swollen, and the tarsi are one- 

 tliird as long as the tibiae. 



In coloration, the species usually closely resemble those of Cymatophora, 

 and are distinguished from that genus by the more plumose male antenna;, 

 the more angular wings, the narrower front, longer hind legs, while some of 

 the species are pearl-culored (71' cognataria), and nearly all have two well- 

 marked rows of black spots along the abdomen. 



Tiie genus Tephrosia as limited by Duponchel and Guene'e is in part 

 composed of species of Cymatophora [Boarmia). C. consonaria and crepuscu- 

 laria are certainly not Tephrosiee, though Guene'e regards them as the typical 

 species of the genus. The genus is represented in Europe by 71 pnac/u- 

 lata, a representative of our 71 anticaria. The genus is very much better 

 represented in this country than in Europe. 



Larva. — The larvae differ from those of Cymatophora in being smooth. 

 The larva of 71 punctulata is said to be smooth, and of a reddish color, with 

 white spots or blotches on the back of all the segments. It feeds on the 

 birch. — (Newman.) 



