Lithosiidae 



as well as by the difference in the color of the wings, is a com- 

 mon species in the Atlantic States, and ranges westward into 

 the basin of the Mississippi. 



Genus H^EMATOMIS Hampson 



This little genus includes, so far as is now known, but two 

 species, both of which are Mexican, but one of which ranges 

 into southern Arizona. The species are separated as follows by 

 Hampson : 



Fore wing with yellowish streaks, on costa, through cell, and 



. . . .mextcana 

 . . , .uniformis 



Fig. 34, $ 



FIG. 51. H&matomismexicana, $ 

 (After Hampson.) 



on inner margin 



2. Fore wing with pale streak on the costa only 



(i) Haematomis mexicana Druce, Plate XIII 

 (The Mexican Lichen- 

 moth.) 



With the help of the illus- 

 trations we have given the 

 student should have no great 

 difficulty in identifying this 

 little moth. 



Genus COMACLA Walker 



This genus is represented in our fauna by two species. One 

 other occurs in Europe and northern Asia, and another in 

 tropical Africa. The two American species are very much 

 alike in appearance, and it is difficult to distinguish worn 

 or rubbed specimens. The following key will be of some 

 assistance: 

 i. Wings pale mouse gray, translucent; collar and abdomen 



ochreous; apex of fore wings rounded simplex Walker 



2. Wings and body uniformly 

 pale mouse gray, wings trans- 

 lucent only about the mid- 

 dle, sprinkled with blackish 

 scales and marked by an 

 obscure discal dot, apex of 

 fore wings less rounded and 

 ' more nearly square than in 



FIG. 52. Comacla simplex, $ 

 (After Hampson.) 



preceding species.} uscipes Grote 



(i) Comacla simplex Walker, Plate XIII, Fig. 34, $ . (The 

 Mouse-colored Lichen-moth.) 



Syn. murina Walker; clarus Grote & Robinson; texana French. 



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