76 THE ACRIDIIDAE OF MINNESOTA 
hind femora extremus 
cc Cerci of male more or less expanded apically, broader at some point 
beyond the middle, spatulate, subspatulate, apically angulate or bifurcate 
d Cerci of male spatulate or subspatulate but neither angulate nor bifurcate 
e Furcula of male moderately developed 
f Hind tibiae red; furcula of male with straight subparallel forks 
comptus 
f# Hind tibiae glaucous 
g Furcula of male not more than one-third as long as supra-anal 
plate; cerci about three times as long as basal breadth; tegmina 
lightly maculate or immaculate angustipennis 
gg Furcula of male more than one-third as long as supra-anal plate; 
cerci shorter and stouter than in the preceding; tegmina usually 
heavily maculate impiger 
ee Furcula of male slight, the projecting portion not longer, or but 
slightly longer, than the last dorsal segment, upon which it rests 
f Forks of furcula conspicuously divergent; relatively large species 
g Prozona ordinarily with a dark median stripe, made more con- 
spicuous by the much lighter color on either side, rarely plain 
light brownish testaceous; hind tibiae, in ours, usually blue 
packard 
gg Prozona with uniform dingy coloration on the disk; the hind 
tibiae red foedus 
ff Forks of furcula nearly parallel; relatively small species, the 
tegmina maculate with fuscous spots conspersa 
dd Cerci of male apically bifurcate or with an inferior process or angula- 
tion, or else so expanded as to be much broader apically than at 
extreme base 
e Small species 
f Lower fork of bifurcation of male cerci much longer than the upper 
imfantilrs 
ff Lower fork of male cerci much shorter than the upper, sometimes 
only an inferior process or angulation 
g Furcula of male distinct 
h Furcula consisting of slender spines, longer than last dorsal 
segment; cerci inferiorly angulate but not bifurcate minor 
hh Furcula consisting of short triangular lobes; cerci strongly 
bifurcate luridus 
gg Furcula of male absent; cerci strongly bifurcate collinus 
ee Large, or at least moderately large, species 
f Interval between mesosternal lobes of male twice, or more than 
twice, as long as broad; in female longer than broad; prosternal 
spine long 
g Furcula of male absent; cerci of male boot-shaped; hind tibiae 
yellow diff erentialis 
gg Furcula of male present, though small; cerci of male expanded 
at the upper margin but not boot-shaped; pronotum with two 
distinct light-colored lateral stripes on the disk, which extend 
back along the humeri of tegmina 
h Hind tibiae dark purplish basally, yellow or reddish apically 
bivitattus 
hh Hind tibiae clear red throughout femoratus 
ff Interval between mesosternal lobes of male subquadrate; of 
female transverse; prosternal spine short; insects of medium 
size, the tegmina maculate with rounded fuscous spots 
punctulatus 
Melanoplus scudderi Uhl. 
Melanoplus scudderi is a short-winged or brachypterous species, 
the tegmina being about as long as the pronotum, broad, ovate, and 
slightly overlapping. The general coloration is nearly uniform, dull, 
and brownish, often with a reddish tinge. The postocular dark bar 
