OETHOPTERA OF INDIANA. 



239 



This is a common locust throughout the State, frequenting the 

 borders of open woods, fence rows, roadsides, and especially the 

 vicinity of the coarse grasses which grow along the margins of lakes, 

 ponds and other wet places. There, as long as mo- 

 tionless, they are invisible, and there they flourish 

 in peace and countless numbers. In southern Indi- 

 ana D. viridis reaches maturity by July 1st, and the 

 sexes may be found mating from* then until after 

 heavy frost. The brown female far outnumbers the 

 green one in this State, especially during the autumn 

 days, when their hues correspond so closely to the 

 dead leaves which cover their haunts of the summer 

 months. The green backed males are, however, the 

 prevailing form of that sex at all seasons. The long 

 winged form' has not, as yet, been taken in Indiana. 

 The wings of the other form are too short for flight, 

 and it tries to escape when disturbed only by leap- 

 ing clumsily. 



When the late spring and early summer have 

 been more than usually damp, hundreds of dead 

 and dying specimens of this species and of Melan- rig. 44. Bicromor- 

 opliis bivittatus Say, are often to be seen m late female, one and 

 July in the tops of iron weeds. They are princi- one-haif times nat- 

 pally females, and their death is probably due to (After Lugger.) 

 the insect fungus, Entomoplitliora calopteni Bessey; 

 an interesting account of which appeared in Bull. 33, U. S. Dept. 

 Agr., 1890, 104. The disease is, perhaps, more abundant on account 

 of the young being exposed to so much dampness in May and June. 

 In two instances females of the lubberly locust, Melanoplus differ- 

 entialis Thos., have been discovered feeding upon the dead bodies 

 of D. viridis, the abdomen and soft portions of thorax having been 

 wholly devoured. 



XX. Orphulella Giglio-Tos. (1891). 



Vertex nearly horizontal, never extending in front of the eyes a 

 distance greater than its own width. Median carina, if present, very 

 faint. Lateral foveola usually present on side margins of vertex, but 

 small and not visible from above. Antenna filiform, sometimes de- 

 pressed and acuminate. Pronotum with the median carina sharp; 

 cut in or behind the middle; the lateral carinje generally diverging 

 both before and behind the middle, so that the center of disk is 



