THE LEPTOCORISINAE OF THE WORLD in 



Mutusca brevicornis (Dallas) 

 (Text-figs. 354-363) 



Leptocorisa brevicornis Dallas, 1852 : 483 



Mutusca brevicornis (Dallas) Stal, 1866 : 160, 1873 : 86 



Characterized by curved, thick and converging paraclypeae, by short basal an- 

 tennal segment, which is only slightly longer than third and by the form of $ and $ 

 genitalia. 



cJ. Body length, 14-7-15-2 mm., width, 1-5-1-6 mm. Head length, 20-21 mm., width, 

 1-3-1-33 mm. Antennae, segment I, 2-8-3-1 mm., II, 2-3-2-4 mm., Ill, 2-4-2-45 mm., IV, 

 2-3-2-4 mm. Rostrum, segment I, 1-3-1-35 mm., II, 1 3-1 35 mm., Ill, 0-4-0-5 mm., IV, 

 07 mm. Pronotum, length, 2-4-2-5 mm., width, 1-3-1-5 mm. Hind femora, 4-7-4-8 mm. 

 Hind tibia, 4-8-5-2 mm. Distance between ocelli, 0-4-0-5 mm., distance between an ocellus 

 and an eye, 0-6-0-7 mm 



Body linear, comparatively more robust, usually pale unicolourous. Head with paraclypeae 

 thick and medially curved, converging at apices (Text-fig. 354). Antennae with short basal 

 segments, at most a quarter as long again as third segment, second always shorter than third. 

 Rostrum comparatively short, nearly approaching anterior margins of second coxae. Pronotal 

 disc with posterior angles brownish black. Legs pale, with basal half of femora usually tinged 

 with green. Hemielytra at base of membrane brownish. Abdomen with dorsum, excluding 

 connexiva, brownish black with three black lines ; venter pale, usually with two lateral black 

 lines, median longitudinal black line usually absent. Posterior margin of seventh abdominal 

 tergum with a median round projection, less punctate and with transverse lines ; pygophore 

 rounded with pointed apex (Text-fig. 355). 



<J genitalia : Claspers comparatively with a long neck and a small median process (Text- 

 fig. 357) ; both dorsal and ventral pairs of thecal appendages present ; second left as a bunch 

 of spines, all fused together, first symmetrical ; membranous appendage with a smaller terminal 

 appendage (Text-fig. 356), and a pair of dorso-lateral membranous appendages. 



$. Body length, 15-0-16-5 mm., width, 1-5-1-7 mm. Head length, 2-1-2-2 mm., (only 

 paraclypeae o-8 mm.), width, 1 -3-1-5 mm. Antennae, segment I, 30-3-2 mm., II, 2-4-2-5 mm., 



III, 2-43-2-6 mm., IV, 2-5-2-6 mm. Rostrum, segment I, 1 33 mm., II, 1-33 mm., Ill, 05 mm., 



IV, 07 mm. Pronotum, length, 2-6-2-7 m m., width, 1-5-1-7 mm. Hind femora, 4-7-4-8 mm. 

 Hind tibia, 4-9-5-2 mm. Distance between ocelli, 0-4-0-5 mm., distance between an ocellus 

 and an eye, 0-6-0-7 mm. 



Longer than <J, otherwise similar, posterior margin of seventh abdominal sternum emarginate, 

 with a long median split and a median fold ; ninth paratergites comparatively broad, about 

 twice as long as broad (Text-fig. 360). 



$ genitalia : First gonocoxae comparatively broad, breadth less than half of length, 

 apices rounded (Text-fig. 360) ; intervalvular sacs absent ; spermatheca oval, with a short 

 twisted tube. 



Type material. Lectotype $, Australia : " New Holland " (/. Byrne), B.M. 

 (N.H.) ; paratype, 1 $, Australia : " New Holland ", Swan River (Richardson) , 

 B.M.(N.H.). 



Other material. Australia : 83 <J, 53 $ ; Solomon Is. : 1 <$. 



The range of this species extends from the type localities in Western Australia to 

 Melville Islands in the north, to New South Wales and Tasmania in the south and 



