MORGAN HEBARD 75 



EE. Pronotum proportionately longer, with greatest width slightly caudad 

 of mesal point. Tegmina little broader than pronotum. Cerci simple. 

 Subgenital plate at base of dextral style decidedly elevated.'"' 



fulvescens (Saussure and Zehntner) -^ 

 DD. These specialized areas represented by decided mesal ridges, overhang- 

 ing the segment which is concave cephalad, ventral faces of overhanging 

 extremities heavily supplied with short hairs. 



divisa (Saussure and Zehntner) ' ^^ 

 BB. Median and first dorsal abdominal segments similarly specialized, (each 

 with twin specialized areas). 

 C. These specialized areas represented on each segment by moderately de- 

 cided, to weak, elevations, with brief cephalic faces supplied with a heavy 

 tuft of hairs. 

 D. These elevations moderately decided. Supra-anal plate with a trans- 

 verse mesal production, which is strongly deflexed. (Size rather large. 

 Form slender. Pronotum proportionately unusually long; length 3.8 to 



4.3. width 4.8 to 5.3 mm.) notha (Rehn and Hebard) 



DD. These elevations weak. Supra-anal plate triangularly produced with 

 apex rounded and distal portion not suddenly deflexed. 

 E. Size medium. Form moderately slender. Pronotum; length 2.9 to 



3.4, width 3.9 to 4.7 mm caudelli new species ' i 2- 



EE. Size large. Form robust. Pronotum; length 4.2 to 5.2, width 5.4 



to 6.7 mm lata (Brunner) ' ^ 



CC. These specialized areas represented on each segment by very decided 

 elevations, overhanging the segments which are concave cephalad, ventral 

 faces of overhanging extremities heavily supplied with hairs. 



pensylvanica (DeGeer) "^ 



Key to Females 

 (Primarily based on Tegminal and Wing Characters) 

 A. Wings absent. (Tegmina xery greatly reduced, represented by very small, 

 lobiform, lateral pads.) 



B. Form compact. Interocular space subequal to that between antennal sock- 

 ets. Tegmina showing hardly any traces of venation. Supra-anal plate 

 rather weakly produced, with lateral margins convergent to broadly rounded 



apex boUiana (Saussure and Zehntner) 



BB. Form normal, not as compact. Interocular space appreciably wider than 

 that between antennal sockets. Tegmina with apparent venation. Supra- 

 anal plate normally produced, with lateral margins convergent to rather 



sharply rounded apex americana (Scudder) 



A.-\. Wings present. 



B. Tegmina decidedly, to greatly, reduced. 



'"' This development is found to be normally very weakly indicated in material from 

 the southwestern portion of the species' distribution. 



MEM. AM. ENT. SOC, 2. 



