224 [March, 



AN ADDITIONAL SPECIES OF BEITISH HOMOPTERA. 

 BY JAMES EDWARDS. 



Several examples of both sexes of the insect described below were 

 sent to me for examination some time since by Mr. Douglas, with 

 an expression of his opinion that it would prove to be the Anomia 

 sulphurella, Zett., of Lethierry's catalogue. Having mounted the g 

 genitalia, and found that it differed in that respect from the species 

 to which it is apparently most nearly allied, viz., rosce and Douglasi, 

 I sent a pair to Mr. Lethierry, who returned them as the sulphurella, 

 Zett., of his catalogue. According to Sahlberg, however, sulphurella, 

 Zett., = Thamnotettix virescens, Fall., and, therefore, another name 

 becomes necessary for our insect, and the one I have applied seems 

 expedient. The structure of the central genital process (genital style) 

 in the <$ will, I think, sufficiently demonstrate the distinctness of the 

 insect before us. In the case of single examples of the ? some care 

 is requisite, in order to separate this species from rosce, ? ; the latter 

 is, however, somewhat smaller, and the crown is longer and narrower, 

 with the outline of the posterior margin in a continuous curve, without 

 any trace of an angle. 



Ttphloctba Lethierrti. 

 Anomia sulphurella, Lethierry, Cat. Hem. Nord., edition ii, p. 75. 





Crown : posterior margin (including the eyes) forming a 

 distinct but obtuse angle, anterior margin gently convex in 

 ^S/ the J , more produced, with straighter sides, in the $ . 



^ s^ .1 $ . Deep yellow, inclining to orange. Elytra with the 



costa generally, and the inner margin sometimes, narrowly 

 reddish, membrane and some wedge-shaped spots on the 

 corium hyaline. Posterior tibiae generally tinged with pink ; 

 anterior and intermediate tarsi sometimes, and all the claws 

 always, fuscous. Genital style with three branches at the 

 apex, of which one, the lower, is three-pointed, and the 

 other two are bifid (fig. a). 



$ . Pale whitish-yellow. Membrane very faintly tinged 

 with fuscous. Tarsi and claws as in the £ . Length, If lines. 



Figures b and c show the structure of the genital style in the g 

 of T. rosce and T. Douglasi respectively. 



Mr. Douglas' specimens were from maple and lime, while I took 

 most of mine on the trunks of black poplars. 



Bracondale, Norwich : 



11//? January, 1881. 



