154 GENUS CARIBLATTA (oRTHOPTERa) 



F. Median portion of distal margin of subgenital plate very broadly 

 rectangulate produced. Tegmina and wings normally moderately 

 reduced.^ Average size larger.^ 



lutea lutea (Saussure and Zehntner) 

 FF. Median portion of distal margin of subgenital plate small, 

 subquadrate, very slightly longer than wide. Tegmina decidedly 

 reduced, wings vestigial. Average size smaller. 



lutea minima new subspecies 

 DD. Sinistral style represented by a curved chitinous spine; dextral 

 style a rounded knob with dorsal surface thickly covered with minute 

 chitinous hairs. (Distal margin of subgenital plate very strongly 

 raised laterad with styles set very deeply within the cleft between lateral 

 portions and median portion, which later projects outward with truncate 

 distal margin raised.) insular'is (Walker) 



CC. Styles simple. (Distal margin of subgenital plate but little raised 

 laterad, briefly notched at base of styles.) imitans new species 



BB. Subgenital plate with four appendages (simple styles and accessory 

 knobs with dorsal surface covered with minute chitinous spines, these 

 situated at base of cerci). (Subgenital plate with very broad median por- 

 tion of distal margin having acute-angulate divergent projections.) 



aediculata new species 

 AA. Subgenital plate strongly asymmetrical (sinistrad strongly but narrowly 

 produced with lateral margins parallel and ventral surface transversely convex; 

 adjacent dextrad is a similar decidedly shorter projection with margins con- 

 vergent: within these projections are concealed greatly speciahzed styles, 

 sinistral a thin circular disk with free margin clothed with microscopic chitinous 

 spines, dextral a rounded knob with dorsal smiace supplied with minute 

 chitinous spines). fossicauda new species 



Key to the Species Based on Diagnostic Characters of Coloration 



Many features of coloration and particularly of color pattern, 

 serve in the present group to distinguish readily many of the 

 species. Use of such characters in the study of material can only 

 lead to mistakes, unless the effect of recession and intensification 

 in the color pattern and coloration is thoroughly understood. 



^ In the female the tegn:>ina and wings are normally more decidedly reduced, 

 while in that sex the wings are found to be vestigial in occasional specimens 

 from the southeastern portion of the distribution of typical lutea. In addition, 

 the female is found to average shghtly larger and more robust than the male; 

 these features result in a greater contrast between the sexes in typical hdea, 

 and to a lesser degree in lutea minima, than in any other species of the genus. 



8 Nearest relationship is found to punclulata. In addition to the features 

 here given, we would add that the buffy general coloration in lutea is always 

 more or less tinged witli cinnamon, while the buffy coloration in pundulata is 

 instead tinged to varying degrees with olivaceous. 



