MORGAN HEBARD 155 



5. Less robust. Furcula shorter. Cercus tapering more conspicuously in 



distal portion. Subgenital plate terminated in a prominent apical 

 tubercle 6 



More robust. Furcula longer, (represented by small tapering spikes.) 

 Cercus very definitely less than twice as long as broad, not tapering dis- 

 tad and so with apex much broader and much more broadly rounded. 

 Penis highly specialized. Subgenital plate at apex feebly and bluntly 

 tuberculate or bituberculate. (Caudal femora (as in magdalenae nor- 

 mal for group) with external pagina usually dark (particularly in 

 males) with a very conspicuous pale ventral marginal band.) Caudal 

 tibiae normally rich pink; buffy in one male and frequently suffused 

 with brown on the sides proximad and distad in that sex, buffy with 

 a very faint glaucous tinge in rare females. White Mountains, San 

 Francisco Mountains and Bill Williams Mountain, Arizona. 



7. truncatus Scudder 5 



6. Intermediate in degree of robustness between truncatus and pinaleno. 



Furcula represented by small tapering spikes, shorter than those of 

 truncatus, longer than those of pinaleno. Cercus narrower than in 

 truncatus, somewhat broader than in pinaleno, slightly to distinctly 

 less than twice as long as the greatest (proximal) width. Penis 

 broader and not as highly specialized as in truncatus, of same char- 

 acter as in pinaleno but broader. Caudal femora normal for group, 

 with external pagina usually dark (particularly in males) with a very 

 conspicuous pale ventral marginal band. Caudal tibiae deep pink. 



Magdalena Mountains, 6 New Mexico 5. magdalenae Hebard 



Only moderately robust for group. Furcula very small, short, no longer 

 than broad. Cercus narrowest, fully twice as long as greatest (proxi- 

 mal) width. Penis of same general type but not as broad. Caudal 

 femora distinctive, in males rich deep red ventrad and ventro-exter- 

 nally, entirely lacking a pale ventral marginal band on external 

 pagina. Caudal tibiae glaucous. Mount Graham in Pinaleno Moun- 

 tains, Arizona 6. pinaleno new species 



Melanoplus pinaleno new species (PI. X, figs. 5 to 7.) 



As may be found from the accompanying key, the present 

 species is nearest magdalenae Hebard. 7 It is likely that these 

 insects occur only at high elevations and are isolated and fixed 

 in features which in a great many forms of Orthoptera are sub- 



5 This species in the more boreal areas (normally at higher elevations) 

 takes the place of jemur-nigrum in the San Francisco Mountains and prob- 

 ably of snowii in similar manner in the White Mountains of Arizona. 



6 This species takes the place of snowii in the more boreal areas (nor- 

 mally at higher elevations) in these mountains. 



7 Described Trans. Amer. Ent. Soc, lx, p. 371, pi. 25, figs. 2 to 5, (1935). 



TRANS. AMER. ENT. SOC., LXIII. 



