380 



FAMILY VI. ACIUDID.E. THE LOCUSTS. 



back at least as far as metazona, male, often subobsolete, female ; 

 hind tibise glaucous or pale greenish-blue, often yellowish at base 

 and tip, the spines black or pale at base; disk of pronotum with 

 sides distinctly but feebly divergent, male, more strongly so, fe- 

 male, median carina low but distinct throughout, prozona one- 

 half or more longer than metazona . ; prosternal spine as described 

 in key to Series ; tegmina shorter than pronotum, oval or obovate, 

 usually well separated but sometimes attingent or nearly so, their 

 tips usually subtruncate, more often so in female; hind femora 

 rather stout, distinctly surpassing abdomen, male, reaching or 

 slightly surpassing its tip, female. Male abdominal appendages 

 variable according to species. 



Seven species of the group are known, all from the southern 

 coastwise states. The males are readily separated by the char- 

 acters given in the following key. The females are very similar in 

 structure and general appearance, and no satisfactory key can 

 be made for their determination. 



1 



Fig. 132. Outlines of cerci of males of Mclanopiiis. X IO - ". pygi"its', b, stegocer- 

 cus; c, scapularis', e, minis; f, stniniosiis; d, apex of male abdomen of HI. rotundipennis, 

 showing form of cercus and p, the strongly elevated pallium. X 4- (After Davis, R. & H. 

 and Scudder.) 



KEY TO SPECIES OF PUER GROUP. 



a. Furcula very short or absent; supra-anal plate of male without deep 

 subapical lateral emarginations, which give its apex a trilobate 

 appearance, 

 b. Furcula distinct but very short (Fig. 133, a); tegmina separated 



by one-half or more the width of one of them. 



c. Hind margin of metazona with a distinct but small median 

 notch.; cerci of male substyliform, very slender, feebly taper- 

 ing beyond the thickened base (Fig. 133, o, b ) ; pallium not 

 elevated above the tip of subgenital plate. 171. PUER. 



cc. Hind margin of metazona rarely with a very minute median 

 notch; cerci laminate, the apical third slightly wider than the 

 middle; pallium conical, strongly elevated above the apex of 

 subgenital plate (Fig. 132, d.) 172. ROTUNDIPENNIS. 



