186 NORTH AMERICAN MELANOPLI (ORTHOPTERA) 



Foss, VII, 1916, 15,1$. Chickasha, IX to X, 1928, (M. J. Brown), 13, 

 3$ , 1 juv. $ , [Hebard and Brown Clns.L Fort Sill, X, 22 to XI, 10, 1918, 

 (T. H. Hubbell), 23,2$, [Acad. Nat. Sci. Phila. and Hebard Clns.L 



Texas: Weatherford, VII, 31, 1934, (F. B. Isely; low lying weedy field, 

 fifteen miles west of), 33, 1$, type, allotype, paratypes. Worth Ranch, 

 Palo Pinto County, VIII, 1, 1934, (F. B. Isely; on Brazos River), 63, para- 

 types, [Hebard and Isely Clns.]. Hill County, XI, 30, 1933, (F. B. Isely; 

 on Brazos River), 13, paratype. Wichita Falls, Texas, 950 feet, VIII, 15 

 and 16, 1905, (A. P. Morse), 3 3,4$, [Mus. Comp. Zool.L Vernon, VIII, 

 31, 1932, (F. B. Isely), 13, 1$. Colorado County, IX, 5, 1927, (J. C. 

 Bradley), 1$. 



Dendrotettix hesperus new species 



(PI. XIII, figs. 7 to 9; pi. XVII, fig. 3.) 



Examination by the author of a very dense conifer forest, 

 largely of spruce, on the western ridges of the Cascade Moun- 

 tains in central Oregon at approximately a thousand feet below 

 and just west of McKenzie Pass, revealed the presence there of 

 a single brachypterous Melanoplid and a female of Trimero- 

 tropis sufjusa Scudder. 



The former insect was seen to represent an unusual type, and 

 vigorous efforts were made to find a male in the bushy under- 

 growth (with practically no grasses or plants) of the forest 

 twilight where the first specimen had been located. Close gen- 

 eral search, of necessity local due to lack of sufficient time, failed 

 completely. It can only be assumed that the individual secured, 

 now found to be representative of a striking new species of the 

 genus Dendrotettix, was a stray into an unfavorable environ- 

 ment from some nearby colony and that other colonies might 

 have been located, but only after very long search, probably in 

 brushy areas (for there is every reason to believe that the insect 

 is thamnophilous) on the borders of or in openings in the very- 

 dense forests. 



Recent revision of the genus and its close allies by Rehn and 

 Rehn 19 enables me not only to place the present female with 

 certainty as to genus, but also to describe the species satisfac- 

 torily from that sex alone; it is indeed the female sex which 

 affords the most valuable generic diagnostic features as well as 

 showing excellent specific characters in both the present species 

 and its allies. 



19 Trans. Amer. Ent. Soc., lxii, pp. 6 and 22, with 11 figures, (1936). 



? 



