STENOBOTHRTJS. 



231 



or more or less incurved. Vlytra fully developed 

 (rarely abortive) ; costal area more or less extended, 

 either narrow throughout or dilated at the base. No 

 intercalary nervure. Wimjx fully developed (rarely 

 abortive or wanting)- First segment of the abdomen 



O/ O 



with a closed tympanum ; subgenital plate in the male 

 recurved. Valves of the urijiusitor short, but exserted, 

 sometimes bearing a lateral basal tooth. 



O 



Stenobothrus, in this sense, was an unwieldy genus; 

 Bolivar therefore split it up into four as follows, one 

 being- Stenobothrus in a restricted sense :- 



1 . Costal area of elytra gradually 

 narrowed towards the apex, pro- 

 longed along the costal margin, 

 and not dilated with a lobe at 

 the base, so that the costal 

 margin is straight. 

 2. Valves of the ovipositor armed 

 with a strong tooth on the 

 outer side, pointing in the 

 same direction as the points 

 of the valves 

 '2/2. Valves of the ovipositor with 



no lateral tooth 



1.1. Costal nrea of elytra rapidly 



narrowing towards the apex, 



generally not exceeding half the 



length of the elytra, broadest 



near the base so as to form a 



lobe or dilatation, so that the 



costal margin is not straight, 



but convex near the base. 



2. Lateral carinse of pronotum 



bent in at an angle or curved 



in the prozona, diverging 



posteriorly .... 



2.2. Lateral car in as of pronotum 



straight and parallel or only 



very slightly curved in the 



prozona 



Stenobothrus Fischer. 

 Omocestus Bolivar. 



Staurodenis Bolivar. 



Chorthippus Fieber. 



('Cat. Sinop. Orth. Fn. Iberica/ pp. 45, 46, 1900.) 



