41 



98. (562.) NISONIADES ICELUS, Lintn. The Dreamy Dusky Wing. 



Nisoniades icelus, French, But. E. U. 8., 1886, 355. 



Thanaos icelus, Scudder, But. E. U. 8. and Can. , II, 1507 ; 



III, pis. 9, 28, 77, 85. 



Frequent in the northern half of the State, but not yet taken in the 

 southern. Habits same as preceding. Food plants, aspen, Pojndus 

 tremidoides, and willow. It is single brooded and hibernates as a full 

 fed larva in a nest which it forms from a leaf and lines with silk. 



99. (564.) NISONIADES LUCILIUS, Lintn. Lucilius's Dusky Wing. 



Thanaos Inciting, French, Sev. Rep. St. Ent. 111., 1878, 161. 



Scudder, But. E. U. 8. and Can., 1889, II, 



1458; HE, pis. 9, 28, 77, 82. 



Xltumades lucilius, French, But. E. U. 8., 1886, 357. 

 Putnam and Lake counties. Scarce. Probably elsewhere as its food 

 plant, Aquilegia canadensis, or wild columbine, is found in all parts of 

 the State. It winters as larva and the imago may be taken from May 

 to September. 



100. (565.) NISONIADES PERSIUS, Scudd. Persiua's Dusky Wing. 

 Xisoniades penius, Mead, Rep. Wheeler Exp., V, 1875, 786. 



French, But. E. U. 8., 1886, 359. 

 Thanaos persius, Scudder, But. E. U. 8. and Can., 1889, II, 



1468 , III, pis. 9, 28, 66, 77, 85. 



Known to occur only in Lake County, but is probably present through- 

 out. Food plants, willow and poplar. 



" The butterfly is fond of alighting on wet sand, and may most fre- 

 quently be found by shady roadsides, near woods. It flies with a strong, 

 rapid movement, especially when disturbed, and seldom passes from one 

 spot to an adjacent one without describing several irregular, rapid circles. 

 At such a time it rarely rises more than two or three inches above the 

 ground." SCUDDER. 



101. (569.) NISONIADES MA.RTIALIS, Scud. Martial's Dusky Wing. 

 Nisoniades martialw, French, But. E. U. S, 1886, 362. 

 Thanaos martialis, Scudder, But. E. U. 8. and Can., 1889, II, 



1493; III, pis. 9,28, 66, 77, 85. 



A rather frequent species in most, parts of the State. It may be taken 

 in June and July, in high, open woods and copses. 



102. (570.) NISONIADES JUVENALIS, Fab. Juvenal's Skipper. 

 Thanaos juvenalis, Harris, Ins. Inj., 1862, 309. 



French, Sev. Rep. St. Ent. Ill, 1878, 162. 

 Scudder, But. E. U. 8. and Can., II, 1476; 

 III, pis. 9, 28, 77, 85. 



