'5^2 BRiT^ISH CICADA. 



Jassus reticiilatus, H.-Schaff. 



Thamnotettix mixta, Sahib. 



Alhjgus mixtus, Scott ; Edw. pt. ii. p. 61. 



This is the most plentiful of our British species 

 of Allygus, and may be commonly taken on oaks, at 

 Haslemere and other places, throughout the summer 

 and autumn. 



It is very variable as to the brown or black speck- 

 ling of the elytra ; sometimes the membrane is deep 

 brown from the frequency of these spots, whilst at other 

 times they show themselves very scantily. 



Male. General colour fine ochreous. Vertex rather 

 short, with from four to eight small spots. Eyes 

 brown, pale, or red, according to the age of the insect. 

 Pronotum with a greyish disc-mark, with brown 

 stainings. Scutellum with the mask-like ornamenta- 

 tion, and occasionally with ferruginous spots. Abdomen 

 long and fusiform ; brown, with yellow on the segmental 

 edges. Apex pointed and cleft. Elytron more or less 

 covered either with small black punctuations or with 

 larger spots, which on the costa are slightly confluent. 

 Black streaks occur also at the point of the clavus. 

 An oval white spot may be seen at the apices in well- 

 marked specimens. Wings ample, with the anal fur- 

 cated nervure stouter than the others. All legs spotted 

 pale ochreous, and the hind tibias with dark linear 

 stripes. Frons ochreous, and much marked with striae 

 and spots. Genital processes complex. Plates tri- 

 angular, and more than twice the length of the genital 

 valve. See fig. 1, b, c, d. 



The female is larger, much paler or greyer, and the 

 abdomen thick and cylindrical. 



Some varieties are beautifully mottled with cool or 

 else with reddish grey ; and when fresh from the pupa 

 they often occur prettily tinged with green. 





Inch. 



Millimetres. 



Expanse 



0-46 



11-68 



Size 



0-19 



4-81 



