THE LEPTOCORISINAE OF THE WORLD 9 



Key to Genera 



i Paraclypeae produced and meeting in front of clypeus (Text-fig. 3), dorsal surface of 



pronotum more or less flat (Leptocorisini trib. n.) . . . . . . 2 



- Paraclypeae shorter than clypeus and never enclosing its apex (Text-fig. 5) ; dorsal 



surface of pronotum usually convex and sloping down towards head (Text-figs. 4, 



6 and 7) (Noliphini trib. n.) ......... . 5 



2 First antennal segment swollen throughout (Text-fig. 3), slender only at base ; in 



lateral view wider beyond middle. (In <J, posterior margin of seventh abdominal 

 tergum roundly produced in middle ; in $, posterior margin of seventh abdominal 

 sternum with a median fold splitting it into two lobes) . . MUTUSCA (p. no) 



- First antennal segment only swollen at apices ; in lateral view not wider beyond 



middle ............. 3 



3 Genae inflexed, greatly produced in front of clypeus (Text-fig. 8). (In <$, posterior 



margin of seventh abdominal tergum medially produced with a truncated apex, 

 lobes of ninth segment greatly developed, usually produced like horn ; in $, 

 posterior margin of seventh abdominal sternum usually conically produced in 

 middle, sometimes with a short median split . . . BLOETEOCORIS (p. 115) 



- Genae normal ............ 4 



4 Claspers made up of two components, always crossed behind ; in $, posterior 



margin of seventh abdominal sternum never distinctly medially produced, never 

 with a median fold, bilobed or with a median split ; spermatheca always with a 

 median flange ; genus only represented in Oriento-Australian regions. 



LEPTOCORISA (p. 69) 



- Claspers never made up of two components, never crossed behind ; in $, posterior 



margin of seventh abdominal sternum either medially produced, with a median 

 fold, bilobed or with a median split ; genus represented in Ethiopian, Nearctic and 

 Neotropical regions STENOCOR1S (p. 9) 



5 Lateral angles of pronotum posteriorly armed with spines (Text-fig. 6). In £, 



pygophore normally more than half retracted within seventh ; in $, posterior 

 margin of seventh abdominal sternum with a median fold . . NOLIPHUS (p. 131) 



- Lateral angles of pronotum posteriorly without spines ...... 6 



6 Anterior femora on under surface below apex with a distinct spine (Text-fig. 9) ; 



ocelli very closely placed, almost touching each other ; disc of pronotum always 

 black (Text-fig. 4) ; found in Oriento-Australian regions . COSMOLEPTUS (p. 126) 



- Anterior femora without a spine, ocelli not at all touching each other ; disc of prono- 



tum of pale colour (Text-fig. 7) ; found in Neotropical region . LYRNESSUS (p. 123) 



LEPTOCORISINI trib. n. 



Body linear. Head always longer than broad ; paraclypeae very well developed, always 

 distinctly longer than and enclosing clypeus ; head behind the eyes not markedly narrower. 

 Pronotum never broader than long, almost rectangular and flat. Aedeagus usually complicated. 

 Spermatheca usually flask-shaped, never conical, sometimes with a median flange. 



This tribe is distinguished from Noliphini by the characters of the anterior region 

 of the head and pronotum. 



STENOCORIS Burmeister. 



Myodocha Latreille, 1810 ; Burmeister, 1835 : 325 



Stenocoris Burmeister, 1839 : 1010 ; Stal, 1873 : 87 [subgenus] ; Blote, 1937 : 2 ^9 [subgenus] ; 

 Villiers, 1955 : 1142 [subgenus] ; Villiers, 1963 : 232 [subgenus] 



Type-species : Cimex tipuloides Degeer. 



