350 REPORT OF STATE GEOLOGIST. 



XLII. Amblycorypiia Stal (1874). 



Head with the vertex flat and without spines; its fastigium de- 

 flexed, much broader than the first antennal joint; eyes elliptical or 

 oblong oval. Wing covers broad and rounded at the tip. Stridulat- 

 ing organ of the male, brownish, opaque, traversed by a strong green 

 cross-vein. Supra-anal plate of male short, truncate; sub-anal plate 

 short and broad at base, narrower at apex, with a broad triangular 

 notch, the tips at side of which end in a short, blunt, spine-like 

 process. Ovipositor, broad, of medium length, curved gradually up- 

 ward from the middle; obtuse or rounded at the end, and with the 

 apical half sharply and strongly serrate on both edges. Six species 

 are listed by Scudder from the United States. Of these, three are 

 known to occur in Indiana. 



KEY TO INDIANA SPECIES OF AMBLYCORYPIIA. 



a. Size, large; tegmina, 34 to 37 mm. in length; those of the male ex- 

 ceeding the tip of posterior femora 84 oblongifoUa, p. 350 



aa. Tegmina not more than 30 mm. in length: those of the male some- 

 times reaching but not exceeding the tip of the posterior femora. 

 6. Size, medium; greatest breadth of tegmina contained less than 



three times in their length; ovipositor strongly curved 



85 rotundifoUa, p. 352 



hh. Size, small; greatest breadth of wing covers contained from 



three and one-fourth to three and one-half times in their 



length; ovipositor but moderately curved 86 vhleri, p. 353 



84. AiiBLYCORYPHA OBLONGiFOLiA (DeGeer). The Oblong Leaf- winged 

 Katydid. 

 Locmta ohloncjifolki DeG., 5 7, lU, 1773, 445, Plate 38, Fig. 2. 

 Phylloptcra obloiujifolia Harris, 7 2, 1862, 159 (Text only); Scudd., 14 1, 



Vn, 1862," 444. 

 Amhli/con/pha obloiu/ifolia BmnneT, 38, 1878, 266; BL, 7, 1893. 104; 

 Beut., 3, VI, 1894, 278; Lugger, 84, 1898, 222, Fig. 147; 

 Scudd., 188, 19(X), 70. 



This is the largest of the three species occurring in the State, 

 measuring about 45 mm. to the end of the wing covers, which are 3.3 

 times as long as wide. The wings exceed the wing covers by 5 to 6.5 

 mm. Anterior margin of pronotum much narrower than the pos- 

 terior, the lateral carinse sharply defined; the hind margin of deflexed 

 lateral lobes broadly rounded. Tne inner, lower carina of posterior 

 femora armed with six to 12 rather strong teeth. General color a 

 bright pea-green, the shrilling organ of the male brownish, with a 

 heavy green cross-vein. The abdomen yellowish or brownish green. 

 Specimens sometimes occur which are wholly pink or rose color. 



