550 



FAMILY VII. TETTIGONIID.E. THE KATYDIDS. 



The type of Scudder was from Dallas, Texas, and the species 

 has its main distribution west of the Mississippi, ranging from 

 Ohio and southern Ontario south to Tennessee and Louisiana, and 

 west to Colorado and central Texas. Of its habits in Ontario 

 Walker (1905, 3G) has written: "On August 7, 1901, while col- 

 lecting at Point Pelee in a low Avoods bordering a stream, I heard 

 a sound very like the stridulation of 0. rnlgare, but more sub- 

 dued, the "zips" coining at much shorter intervals, and more of 

 them produced at a time. I succeeded in tracing the song to its 

 source and found an Orchelimum quite new to me which proved 

 to be 0. nigripes. Another male was taken in the same way. and 

 I heard others but was unable to find them. In several cases the 

 sound proceeded from trees at a height of some ten or fifteen feet, 

 but as a rule it came from tall weeds and vines which grow in 

 great luxuriance upon the rich black soil." 



At Moline, 111., McNeill (1891, 25) found it "about as common 

 as, vulgare. It is not at all shy but even shows a preference, I have 

 thought, for human society. I have known a male to keep a place 

 over the wooden finish of a doorway for more than a week. If he 

 ate during that time he must have been obliged to leave his post 

 to satisfy his hunger and he probably returned many times to the 

 place. The song is difficult to distinguish with certainty from 

 that of culgcire but usually the zip-zip is repeated only once or 

 twice very rapidly and the z-e-e-e-c does not continue so long." 



The X. (0.) robust it in Bedt. (1891, 499) described from New 

 Orleans, La., is placed by R. & H. as a synonym of 0. nigripes. 



Fig. 182. a, Outline of stridulating field of male of O. vulgare: b, same of O. cry- 

 throcephahim, X 3! c > outline of male type of O. calcaratum, X 2 - (After R. 4t II.) 



252. ORCHELIMUM CALCARATUM Rehn & Hebard, 1915a, 46. 

 Meadow Grasshopper. 



Long-spurred 



Size medium for the genus; form moderately robust. Pale green, oc 

 ciput and disk of prozona with usually a median pale brown stripe, this 

 darker on the sides; stridulating field of male with three spots of black- 

 ish brown as in vulgare, two at base and one on left near apex; abdomen 

 of male often with a dark blotch above; ovipositor pale brown. Fastigium 

 feebly ascending, but slightly wider than basal joint of antennae. Antennae 

 nearly four times as long as body. Pronotum slightly saddle-shaped, met- 





