192 NORTH AMERICAN MUTILLIDAE 



I. A REVISION OF EPHUTA SA Y, A GENUS OF MUTIL- 

 LIDAE EQUIVALENT TO THE SPECIES GROUP 

 SCRUPEA OF FOX 



In describing several new males of this genus, I take occasion 

 to present a revised key to the species of America north of Mexico, 

 and a brief review of our knowledge of the group. 



A Key to the Males of the Species of America North of Mexico 

 (The females of only one species, puteola, are known.) 



1. Head and thorax entirely black (2) 



Head, thorax, and abdomen except apex red; an interrupted, straight 



carina between the eyes and bases of the antennae. . . .slossonae Fox 



2. Abdomen entirely red (3) 



Entire insect black, or in one species the second abdominal segment largely 



red (4) 



3. Petiole red, except at base; second abdominal segment rather coarsely, 



closely punctured, with pubescence entirely reddish yellow. 



copano Blake 



Petiole black; second abdominal segment more coarsely punctured, its 



pubescence largely dusky susura Melander 



4. Tegulae finely, often sparsely punctulate, more or less polished, at most 



with a few medium sized punctures near the base (5) 



Tegulae very rugosely punctured and hirsute entirely or nearly to the 

 tip (7) 



5. Tegulae with a strong, longitudinal, curved, ridge, minutely and evenly 



punctulate all over, with no coarser punctures; ti'ansverse diameter of 

 posterior ocelli equal to approximately one-third of their distance from 

 the eyes, equal to about three-fourths their distance from each other, 

 greater than their distance from the front ocellus; abdomen entirely 



black tegulicia n. sp. 



Tegulae not longitudinally ridged, or very feebly ridged at base, in which 

 case there are some coarser punctures, and the second abdominal seg- 

 ment is red (6) 



6.' Transverse diameter of the posterior ocelli slightly less than one-fourth as 

 great as their distance from the eyes, equal to about one-third of their 

 distance from each other and about two-thirds of their distance from 

 the front ocellus; tegulae with minute, regular punctulation only; entire 

 insect black, the apical segments with griseous bands. . . . grisea n. sp. 

 Transverse diameter of the posterior ocelli about one-half as great as their 

 distance from the eyes, equal to seven-ninths of their distance from each 

 other, and about one and one-half times theiu distance from the front 

 ocellus; tegulae with a few coarse basal punctures; second abdominal 

 segment red, the apical segments with only scant, scattered, griseous, 

 pubescence. , battlei n. sp. 



