180 RHYNCHOPHORA — CURCULIONIDAE. 



oval, with punctured striae, sutural stria deeper than the 

 rest. L. 1 — 1| 1. Common. A. virens, Herbst. 



S JB, Thorax distinctly punctured. 

 a a. Elytra black or leaden-black. 

 A a. Scutellum small, punctiform. 

 A 1. Eostrum rather long. 



a 1, First tarsal joint distinctly longer 

 than second ; thorax with central 

 furrow reaching at least to middle. 



A 2. Eyes not strongly prominent ; 

 antennae entirely black, or dusky 

 yellow at base only. 



a 2, Central furrow on thorax 

 reaching to middle. 



A 3, Vertex of head short ; 

 rostrum of male somewhat 

 dilated in middle and slightly 

 thickened beneath. 



Black, almost bare ; base of antennae yellow-red. Ros- 

 trum long, curved ; head flat, nearly square ; thorax nearly 

 cylindrical, narrow, closely and moderately strongly punc- 

 tured, with a central furrow behind ; elytra ovate, with 

 punctured furrows, interstices flat, finely punctured. L. 

 1^1. Common. A. plataUa, Gferva.. 



a 3. Vertex of head long ; ros- 

 trum of male somewhat thick- 

 ened beneath before insertion 

 of antennae. 



Black, finely pubescent. Head narrow ; rostrum very 

 long, distinctly punctured ; eyes not convex ; forehead 

 finely striate ; thorax almost cylindrical, strongly punc- 

 tured, with a short central furrow behind ; elytra oblong, 

 with deep punctured striae, interstices flat. L. 1 1. Mode- 

 rately common. A. Gyllenhali, Kirby. 



h 2. Central furrow on thorax 

 reaching from base to apex. 



Similar to A. ervi, but with antennae entirely black, 

 pubescence rather closer, rostrum punctured in wrinkles, 

 central furrow of thorax somewhat longer. L. 1^ 1. Com- 

 mon, A. on 071 is, Kirby. 



