i 4 8 I. AHMAD 



other species of the tribe and this, together with zoogeographical evidence, leads to 

 the tentative suggestion that in contrast to Noliphini, the centre of evolution of this 

 tribe was in the Ethiopian-Oriental regions. The subgenera of Stenocoris show a 

 series of changes in the form of the posterior margin of the $ seventh abdominal sternum 

 running parallel with which is the reduction of the dorsal thecal appendages in the 

 aedeagus. The dorsal thecal appendages are paired in Pseudoleptocorisa, they are 

 fused in Erbula and very small and reduced in Stenocoris claviformis and absent in 

 all the other species of Stenocoris and in all the species of Oryzocoris. The subgenus 

 Erbula is entirely Ethiopian, Stenocoris is distributed in Ethiopian, southern Nearctic 

 and Neotropical regions and Oryzocoris is limited to the southern Nearctic and Neo- 

 tropical (occurring as far north as Florida and Texas). The Neotropical species of 

 Stenocoris stand apart from the rest of the subgenus, more especially in the broad 

 bases of the first gonocoxae that extend to conceal most of the eighth paratergite 

 proximally. 





-n" yv 



• u 



•• r * '--"W^"""^^ 













V ^ 



• 



= Stenocoris pallida. 

 Yz\ '• maculosa 



«Asi 



f % Sk*^ _^ 









— -jjr 



/--~-"-~-f?" 



^4*" : flF 



tT- - — I — 



\ P~^ci : : / > 





\ k ^y^-~~\ ^) 



u 





y^s- = -~-oP 









474 



Fig. 474. Distribution map of Stenocoris spp. 



