120 



TUYXALJNyi:. 



139, Dociostaurus decisus, Walk. 



Stenobothrus decisus, Walker, Cat. Derm. Salt. B.M. v. 1871, Suppl. 

 p. 80. 



Brown ; fastigium of the vertex subtriangular, the foveolae 

 oval, sides of face below the eyes and behind the lateral carin^e 

 paler ; a pale stripe runs from the fas- 

 tigium over the head and pronotum ; the 

 lateral carinse narrowly pale ; three trans- 

 verse sutures indented on the sides of the 

 median carina, the hindmost at the middle 

 of the pronotum. Pleui'a brownish, with 

 an oblique pale carina behind. Tegmina 

 rufo-testaceous, with a row of large brown 

 spots along the central area, and with 

 smaller brown dots between these and the 

 costa ; wings hyaline, with the nervures 

 of the costal area reddish. Abdomen 

 carinated above. Hind femoi'a testaceous, 

 brown on the outer side nearly to the 

 extremity ; tibiae red, yellowish towards 

 the base, with about 12 small black spines 

 on each carina. 



Length 23 mm.; expanse of tegmina, 

 38 mm. 



Fig. 91. 

 Dociostaurus decisus. 



Bombay. 



Types in the British Museum. 



Genus STENOBOTHRUS. 



Stenobothrus, Fischer, Orth. Eur. 1853, pp. 296, 313. 

 Type, Gryllus Vmeatus, Panz. 



Range. Europe, N. & W. Asia, N. Africa, Madagascar, Australia, 

 Chile. 



Vertex triangular, obtuse ; foveolse superior, long, narrow ; front 

 only slightly sloping, prominent, more or less snlcated ; antennae 

 filiform. Pronotum tricarinate, constricted in the middle, with 

 one transverse sulcus. Tegmina and Avings generally perfectly 

 developed, hyaline or subhyaline. Hind femora unarmed, hind 

 tibiae spinose. Pectus broad, mesosternal lobes widely separated, 

 metasterual lobes produced behind the foveolae, and distant. 

 Tympanum on the first abdominal segment covered ; anal segment 

 longitudinally snlcate ; supra-anal lamina in male obtusely tri- 

 angular ; subgenital lamina in male recurved, obtuse or pointed at 

 the tip. Valves of ovipositor short, exserted, sometimes with a 

 lateral tooth at the base. 



