132 RHYNCHOPHORA — CURCULIONIDAE, 



1* Ground colour of elytra black. 

 A A, Central furrow on thorax not deep. 



a a. Upper-side with gray or white scales, 

 placed more thickly in some places than in 

 others. 



A a. Antennae wholly or partly red-yellow 

 or yellow-brown. 



A 1, Thorax strongly constricted before 

 apex, anterior margin much raised. 



a 1, Lateral tubercles on thorax en- 

 tirely surrounded by whitish scales. 



Short ovate, rather flat. Black, dull ; antennae and 

 tarsi yellow-brown ; sides of thorax (until beyond lateral 

 tubercles), on elytra a common cruciform basal spot, an 

 apical one and an abbreviated lateral band, and the under- 

 side of body covered with white scales. Thorax with cen- 

 tral furrow, lateral tubercles bluntly conical ; elytra with 

 punctured striae. L. 1^ — 1|- 1. Eather common. 



G. litura, Fab. 



6 .1. Lateral tubercles on thorax (if any) 

 not surrounded by whitish scales. 



A 2. Suture of elytra without black 

 spot. 



a 2, Elytra with distinct, well- 

 defined white spots. 



A S. Lateral tubercles on thorax 

 distinct. 



a 3. Tibiae black. 



Black, dull ; antennae and tarsi reddish ; sides of thorax, 

 on elytra a broad apical spot, an abbreviated lateral band 

 and a small composite spot near base of suture on each, and 

 the under-side of body covered with white scales, base of 

 suture with pale yellowish scales. Thorax flat, with central 

 furrow ; elytra with punctured striae. L. 1| 1. Eather 

 common. C. trimaculatus, Fab. 



h 3, Tibiae yellow-brown. 



Oblong-ovate, slightly convex. Black, dull ; under-side 

 closely covered with white scales ; antennae, tibiae and 

 tarsi dark yellow-brown ; sides and central line of thorax 



