SUBFAMILY III. COPIPHORINJE. 



503 



I. BELOCEPHALUS Scudder, 1875, 458. (Gr., "sharp" + "head.") 

 THE WINGLESS"' CONE-HEADED GRASSHOPPERS. 



Medium sized Tettigoniids of rather robust form, having the 

 vertex usually strongly produced in the form of a stout, sharply 

 pointed cone bearing on its lower face a small basal tooth; eyes 

 small, not prominent; proiiotum snbcylindrical, front and hind 

 margins subtruncate or rounded, transverse sulcus at apical third 

 very faint, lateral lobes longer than deep, their lower margin 

 nearly straight, its angles obtusely rounded ; tegmina of males 

 shorter than pronotum, with shrilling organ well developed, part- 

 ly transparent, those of females very small, widely separated lat- 

 eral pads reaching only to second dorsal abdominal segment; front 

 and middle femora subequal in length, armed beneath on outer 

 margin with two to five minute teeth; hind femora slender, their 

 lower outer margins with eight to ten, and inner with three to five 

 rather stout teeth, lower lobe of knees ending in a small, acute 

 spine. Male with supra-anal plate very broad, triangular, deeply 

 emarginate at apex ; cerci very stout, strongly incurved and deep- 

 ly forked at apex, the upper prong of fork the more slender (Fig. 

 166, c, x) ; subgeuital plate broad, feebly emarginate and bearing 



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Fig. 166. Supra-anal plates of males of Beloccpha'us, showing the form of the notch, 

 a, of sabalis; b, sleighti; c, subaptenis; d, e.vcai'atns', e, rchni; f, inicanopy; x, male cerci 

 of subapterus. (After Davis.) 



each side of the notch a very small, one-jointed style set in a shal- 

 low socket. Ovipositor rather stout, nearly straight, half or more 

 the length of body. 



The species are usually dimorphic in color, either a nearly uni- 

 form pale green or pale brown, the males being more often of the 

 former hue. Since they cannot fly and are not active walkers, 

 each colony is confined closely to its original environment, thus 

 causing minor modifications of structure in isolated areas. 



The genus was founded on a single Florida species and up to 

 1912 was considered monotypic. Since that date seven additional 

 nominal species have been described by Davis and R. & H., all 

 from the southern States. As only one of the eight has been taken 

 by me, Mr. Davis kindly prepared the following key to the species. 

 This is based largely upon the males, the females being very diffi- 



