216 FAMILY VI.-L0CUSTID.4£. 



aa. Length of posterior femora 22 or 23 mm. 



fiircata Brunner. 

 aaa. Length of posterior femora less than 20 mm. 



angustifolia Harris. 



^ GENUS Scudderia StM (1873). 



Head oval; eyes round and protruding, vertex pinched; 

 antennae longer than the wings, first joint cylindrical, stout, 

 second joint smaller, remaining joints hair-like. Thorax 

 longer than broad, narrower in front than behind ; lateral 

 carina sharply defined. Wing-covers shorter than the wings 

 and of nearly equal wndth throughout, apex rounded. Hind 

 legs very long and slender. Male with the anal plates provided 

 with two curved spines, the one from the supra-anal plate 

 curved downward and notched at the end, and. the one from 

 the sub-anal curving upwards and grooved above. Female 

 with the ovipositor short, broad, flat and turned upwards, 

 with the apical portion very finely serrate. 



Four species have been found in Minnesota, but it is 

 very likely that a fifth will be detected upon a closer search. 

 They are all very similar, but can readily be distinguished 

 b}^ studying the structure of the anal plates of the males. 



Scudderia curvicauda DeGeer. 



THE NARROW-WINGED KATYDID. 



This is one of the most common of our Katydids, found 

 in many places during August and until cold weather. It is es- 

 pecially common among low bushes 

 in damp places. When approached 

 it flies readily in a zigzag, noiseless 

 manner for a long distance to an- 

 other clump of weeds, or to the 

 lower branches of an oak, a tree 



- Fig 13S.— Scudderia curvicau- in whlch it dclightS tO dwcll. 

 da, tip of male abdomen. En- . 



larged. Original. Wiug-covcrs, Icgs and thorax 



pale green; head and under-side of body paler; pronotum 



