174 RHYNCHOPHOKA — CURCULIONIDAE. 



2* Forehead without impression. 



Black, shiny, with very fine and scanty pubescence ; 

 elytra bluish-green or black-green. Forehead wrinkled, 

 without longitudinal depression, vertex flattened trans- 

 versely ; thorax very finely punctured ; elytra with rather 

 deep, indistinctly punctured striae ; interstices slightly 

 convex, with very fine, scarcely visible punctures. L. 1^ 

 — 1^ 1. Common. A. radiolus, Kirby. 



h. Antennae inserted at about basal third-part of 

 rostrum. 



I» Legs black. 



1, Elytra without pubescence. 



Green or greenish-blue, shiny; rostrum black, shiny. 

 Forehead wrinkled ; eyes not very prominent ; thorax as 

 long as broad, with large, deep punctures and a short, deep 

 central furrow ; elytra ovate, with fine punctured striae. 

 L. 1 1. Kare. A. astragali, Payk. 



2, Elytra with more or less distinct pubescence. 



A A, Elytra very strongly inflated behind middle, 

 not narrowed behind, pear-shaped. 



a a. Thorax with central furrow nearly from 

 base to apex. 



Black, dull, wdth very feeble pubescence. Head finely 

 punctured, nearly smooth ; rostrum rather long, curved ; 

 thorax as long as broad, cylindrical, closely, deeply and 

 rather coarsely punctured, with a central furrow nearly 

 throughout; elytra wath deep, broad punctured furrows, 

 interstices convex. L. 1 1. Common. A. striatum, Kirby. 



b b. Thorax with an impression before scu- 

 tellum. 



Black, with very fine gray pubescence. Head wrinkled 

 between eyes ; rostrum feebly punctured, shiny ; thorax 

 globular, very closely and finely punctured, with an im- 

 pression before scutellum ; elytra with punctured furrows, 

 interstices flatly arched. L. 1 — 1^ 1. Bather common. 



A. immune, Kirby. 



IB S, Elytra ovate or oblong. 



a ft. Forehead with depression. 



