ORTHOPTEEA OF INDIANA. 351 



Measurements: Male — Length of body, 21 mm.j of tegmina, 38 

 mm.; of posterior femora, 30 mm.; of pronotum, 6.5 mm. Female — 

 Length of body, 23 mm.; of tegmina, 36 mm.; of posterior femora, 

 31 mm.; of ovipositor, 11.5 mm. Width of tegmina of male, 11.5. 



Fig. 83. Amblycorypha oblongifolia (DeG .) Female. (After Lugger). 



The oblong-winged katydid is a common species throughout the 

 State, its general range including the northern United States and 

 Canada, east of the Great Plains. In southern Indiana it becomes 

 mature about July 20th, and in the northern counties probably a 

 fortnight later. A number of pink specimens have been taken from 

 low meadows near Bass Lake, Starke Comity, by Mr. Frank Hay. 

 Two of these are in my private collection. They were taken in a 

 large marshy meadow in the lowlands bordering Yellow River. The 

 causes which produce this curious "sport," by which a grass green 

 is changed to a delicate pink, are, as yet, unknown. Scudder has 

 said that "One thinks at once of aiitumn leaves and their change 

 from green to red and notices that these pink katydids all occur in 

 the autumn." In Indiana the pink specimens have been taken in 

 early August, long before frost and before any noticeable change 

 in the surrounding vegetation. 



Ohlongifolia frequents the shrubbery and flowers of the golden-rod 

 and other Composite along fence rows and the edges of thickets and 

 woods, especially in damp localities; and when flushed, flies with a 

 kind of whirring noise, alighting on fence or the lower branch of 

 tree. I have often located the male by its note, which to rwe is a 

 creaking squawk — like the noise made by drawing a fine-toothed 

 comb over a taut string. It is usually but once repeated, though 

 sometimes three times. On several occasions it has been made after 

 the insect was in my fingers. McNeill says that it is a "quick, shuffl- 

 ing noise which resembles 'katy' or "^katydid' very slightly." 



