DICRANEURA ARMATA. 107 



DiCRANEURA ARMATA, miM. Plate LXIII., figs. StoSa. 



Head deltoid ; eyes black. Pronotum with fore 

 border pointed ; the hind border nearly straight. Scn- 

 tellum with three longish spots disposed "mask-like." 

 Abdomen of the female very long, dark brown, each 

 segment edged broadly with yellow. The last three 

 sometimes much dilated, and ending with a broad plate 

 and canda, below which two large genital valves enclose 

 the saw-apparatus ; this usually is disengaged, and 

 carried below like a large black sickle. Elytron pale 

 orange darker at the base, and furnished with three 

 strong and darker subparallel nervures, united by four 

 transverse nervures reaching to the margin. Wings 

 grey, with brown nervures. All the legs ferruginous- 

 yellow, without black points. 



This insect does not agree with any description that 

 I have seen. It cannot well be D, aureola of Fall., 

 the elytra of which are yellow-green ; but it partly 

 agrees, perhaps, with D. pygmcm of Douglas, a single 

 male of which was taken in Darenth Wood, and up to 

 this time has been unique. 



The golden yellow tint of the elytron suggests the 

 possibility of identity with Cicadida orichalcea of 

 Zetterstedt ; but, failing proof of such, I provisionally 

 name this insect D. armata, from the extensive and the 

 highly developed saw-apparatus of the female. 



Five examples of this insect were taken in mid- 

 summer at Haslemere. 



Inch. Millimetres. 



Expanse 0'24 6-00 



Body only 0-14 3-50 



