LEPIDOPTERA OF NEW YORK AND NEIGHBORING STATES 647 



6. OID^MATOPHORUS Wallengren 



(Pterophorus Geoffrey, in part, not Hiibner; Leioptilus Wallengren, in 

 part; Alucita of Meyrick; Linnaeus, in part, etc.) 



No ocelli. . Front without definite tuft, or more or less loosely conically tufted; 

 palpi moderate, sometimes rough-scaled or tufted at apex; hind tibiae and tarsi 

 most often smooth-scaled. Fore wing (fig. 400) normally cleft a third way to base, 

 6r rather more; with two lanceolate lobes. Hind wing with the first feather lance- 

 olate, the third linear, without any black scales in fringes. Fore wing with R 3 lost, 

 the other veins free; M 2 running to the lobe, well above the notch; hind wing with 

 one Cu lost, first feather without dorsal angle, R running almost to its apex; second 

 feather also lanceolate. 



A large and moderately varied genus, dominant in North America; absent from 

 Australia. 



Caterpillar (fig. 406) normally with distinct warts, and living more or less 

 exposed A few species are said to be borers, with simple hair only (AdaAna, ?). 

 There may be a few subprimaries, but never secondary hair. Pupa suspended. 



Key to the species 

 1. Fore wing lemon yellow, contrasting with the chocolate-brown hind wing. 



15. sulphur eodactylus. 

 1. Fore wing not yellow, or hind wing hardly darker. 



2. Fore wing with a dark postmedial costal dot or patch opposite the base of 



the cleft, sometimes connected with a spot before the base of the cleft. 

 3. Posterior edges of abdominal segments with paired black dots; ground 



gray 6. inquinatus. 



3. Abdomen otherwise marked, often with unpaired dots. 



4. Ground white; middle tibise with a well-marked median tuft. .9. elliottii. 

 4. Ground not white, or tuft on mid-tibiae slight or absent. 



5. Smallish (22 mm.); white, coarsely irrorate with gray; tuft on 



middle tibiae slight or absent 7. linus. 



5. Larger, or middle tibiae tufted, or more fully marked. 



6. Fore wing white with clouded markings, and a distinct oblique 



shade ; tuft weak 5. brucei. 



6. Fore wing not white, or tuft on mid-tibiae strong. 



7. Fringe on inner margin of fore wing white or with white tufts; 

 hind legs annulate; mid-tibia with strong tuft. . . .3. eupatorii. 

 7. Fringe with traces of white, or none, on inner margin. 



8. Clay-color, lightly powdered, with a contrasting brown tri- 

 angle on cleft 1. cretidactylus. 



8. With more abundant dark dusting, leaving the veins often 



pale; wings narrower; less mottled 4. dneraceus. 



2. No dark mark opposite base of notch, on costa, but sometimes one half- 

 way between this point and apex. 



3. Fore wings narrow (% as wide as long); fringe of second lobe wider 

 than its lobe; middle tibia with two distinct tufts; hind tarsus with 



a more or less distinct dorsal crest 16. monodactylus. 



3. Fore wing broader with narrower fringe; no crest on hind tarsus. 



4. Snow white, with no tuft on mid-tibia; fore wing with at most a slight 

 dark dot at notch 8. homodactylus. 



' 0. matheicianus is always paler, with white hind legs and weaker tufts. 



