THE LEPTOCORISINAE OF THE WORLD 123 



NOLIPHINI trib. n. 



Body large and robust. Head broader than long, paraclypeae poorly developed, distinctly 

 shorter than and never enclosing clypeus ; head behind the eyes very strongly narrowed and 

 turned up towards pronotum. Pronotum broader than long, trapeziform and convex. 

 Aedeagus with both dorsal and ventral pairs of thecal appendages, simple. Spermatheca 

 usually tubular, sometimes triangular, never with a median flange. 



The characters of the anterior region of the head and the form of the pronotum 

 clearly separate this tribe from Leptocorisini. 



L YRNESS US Stal 



Lyrnessus Stal, 1862 : 59, 1865 : 185, 1866 : 159, 1868 : 54, 1873 : 86 

 Coristenia Costa, 1863 : 261 



Type-species : Lyrnessus geniculatus (Guerin, 1857) by monotypy. 



Body robust. Head triangular. Antennae with apices of basal segments slightly thicker. 

 Rostrum long, reaching third coxae. Pronotal disc trapeziform, without latero-posterior 

 spines (Text-fig. 7) and without black sculpturation. Hemielytra brownish black with costal 

 margins and veins prominently pale. 



In <$, posterior margin of seventh abdominal tergum truncated, medially only slightly concave 

 (Text-fig. 392) ; claspers strongly curved, apically acutely pointed, with a median spine (Text- 

 fig. 393) ; aedeagus with both (dorsal and ventral) pairs of thecal appendages, asymmetrical 

 pair of lateral conjunctival appendages and a pair of fused supporting appendages (Text-fig. 



393)- 



In <j>, posterior margin of seventh abdominal sternum emarginate, with a median fold (Text- 

 fig. 394) ; first gonocoxae large with round apices (Text-fig. 399) ; three pairs of intervalvular 

 sacs, spermatheca tubular, curved in middle, with a long coiled tube. 



The only species of this genus, L. geniculatus (Guerin) , is found in Neotropical region, 

 whereas all the other species of the tribe Noliphini are confined to Oriento-Australian 

 region, thus it is not surprising that it shows isolation in many characters. It lacks 

 the fore femoral spines of Cosmoleptus and latero-posterior spines on pronotum of 

 Noliphus. It also resembles Stenocoris (Pseudoleptocorisa) erratica Blote in the 

 characters of the colour of the hemielytra. 



Lyrnessus geniculatus (Guerin) 



(Text-figs. 39J-399) 



Leptocorisa geniculata Guerin, 1857 : 392 

 Lyrnessus geniculatus (Guerin) Stal, 1866 : 159 

 Paryphes tibialis Stal, i860 : 31 

 Coristenia flavicosta, Costa, 1863 : 261 



Characterized by pale basal quarter of apical antennal segments, by dark brownish 

 black apices of femora, entire tibia and tarsi and by the form of $ and $ genitalia. 



o*. Body length, 12-6-14-6 mm., width, 2-2-2-7 mm . Head length, 1-3-1-4 mm., width, 

 1-4-1-7 mm. Antennae, segment I, 3-0-3-7 mm., II, 2-1-2-8 mm., Ill, 24-30 mm., IV, 

 3-9-4-1 mm. Rostrum, segment I, 1-4-1-6 mm., II, 1-4-1-7 mm., Ill, 0-6-0-7 mm -. IV, 

 0-9-1-1 mm. Pronotum, length, 2-1-2-6 mm., width, 2-2-2-7 mm - Hind femora, 4-2-5-5 mm. 



