Lithosiidae 



the nind wing is slightly produced at the anal angle. Here 

 come two of the species found in our fauna, /. schwar^iorum 

 and /. unifascia. In the third section, typical Illice, fall the 

 species in which the anal angle is not produced. Here are 

 placed five species. The student may find the following key 

 helpful in determining his specimens: 



A. Hind wing slightly produced at the anal angle. 



Lappets and markings of fore wing yellow, hind wings 

 crimson, fuscous at apex. 



1 . Fore wing with the band across the wing crimson on the 



inner margin ........................ schwarziorum Dyar 



2 . Fore wing with the band across the wing not crimson on 



the inner margin ........................ unifascia Grote 



B. Hind wing not produced at the anal angle. 

 Abdomen crimson ; fore wing slaty-gray in ground color. 



1. Fore wing with crimson patch on the costa ....... subjecta Walker 



2. Fore wing without crimson patch on costa, and with a pink 



streak on the inner margin at the base . . . .striata Ottolengui 



3. Fore wing with whitish patch about the middle of the inner 



margin ................................ plumbea Stretch 



Abdomen orange or yellowish. 



1. Hind wing pale yellow, with apex blackish ........ nexa Boisduval 



2. Hind wing smoky-gray .................... faustinula Boisduval 



(i) Illice unifascia Grote 

 & Robinson, Plate XIII : Fig. 

 36, ? . (The Banded Lichen- 

 moth.) 



Syn. lenuifascia Harvey. 



The insect ranges from 

 the Ohio Valley southward to 



FlG . 55 .niice unifascia, $ . 

 (After Hampson.) 



Texas, and from Virginia to Florida. The transverse band 



is often interrupted in the 

 middle of the wing, and there 

 is variation in the color of 

 the hind wings, which, while 

 usually red or crimson, may 

 FIG. 56. Illice subjecta, $ . f al so be orange, or even 



(After Hampson.) yellow. 



(2) Illice subjecta Walker, Plate XIII, Fig. 35, $ . (The 

 Subject Lichen-moth.) 

 Syn. packardi Grote. 



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