24 THE ACRIDIDAE OF MINNESOTA 
ORPHULELLA Giglio-Tos. 
The Orphulellas include insects of small or medium size, slender, 
and vary, in our forms; from green to brown, sometimes variegated 
with pink or purple. Vertex nearly horizontal and not extending before 
the eyes a distance greater than its own width; median carina obsoles- 
cent, sometimes very faintly indicated in part; the lateral foveolae 
usually present though small and not visible from above. The antennae 
are filiform, medium in length, sometimes depressed or acuminate. 
Pronotum with median carina distinct and usually of moderate 
strength, cut at or behind the middle by one sulcus; lateral carinae, 
in ours, more or less divergent before and behind the sulcus, which is 
very weak; front margin of disk truncate or rarely slightly cuspidate ; 
posterior margin broadly rounded or subangulate. Posterior femora 
moderately slender, exceeding the abdomen in both sexes; tegmina 
reaching or exceeding the tip of posterior femora. 
So far as now known we have but two species within our State, 
but as more general collecting is done, it appears very possible that 
others may be found. Our species may be separated by the following 
characters: 
Lateral carinae of the pronotum strongly incurved; prozona and metazona about 
equal in length pelidna 
Lateral carinae of the pronotum slightly incurved; prozona considerably longer 
than the metazona speciosa 
Orphulella pelidna Burm. 
Orphulella pelidna is rather small and quite variable in colora- 
tion. It has been found at many widely scattered points throughout 
the State but usually not in very large numbers at any one point. The 
brown form, with the tegmina and posterior femora somewhat lighter, 
is the predominant type but in certain localities distinctly green forms 
may be taken. In this species, as in many of the Tryalinae, most of 
the green specimens are males. We have taken this species usually 
amid low vegetation and in areas of moderately moist soil. In the 
vicinity of Fergus Falls it matures about the middle of July. We have 
collected this species at Winona, Gray Cloud Island, Mankato, Red- 
wood Falls, Detroit, Fergus Falls, Wadena, Ada, Crookston, and 
Mahtomedi. 
Orphulella speciosa Scudd. 
In Orphulella speciosa the green form is predominant in both 
sexes, the vertex and pronotum are somewhat broader than in 
O. pelidna, and the posterior femora generally somewhat stouter with 
