182 RHYNCHOPHORA — CURCULIONIDAE. 



6 &. Elytra blue or green. 



A a. Elytra not pubescent. 



A 1. Sides of thorax straight ; first tarsal 

 joint half as long again as second. 



a 1. Eyes prominent. 



Black, bare ; elytra dark-blue. Eostrum and head closely 

 and deeply punctured ; eyes prominent ; thorax nearly 

 cylindrical, deeply and distinctly punctured, with a short 

 central furrow behind ; elytra short oval, convex, with 

 punctured furrows, interstices rather convex. L. 1^ 1. 

 Common. A. pi si, Fab. 



b 1, Eyes not prominent. 



Black, bare ; elytra black-blue. Rostrum rather long 

 and thin, punctured ; forehead wrinkled ; eyes not promi- 

 nent ; thorax cylindrical, as long as broad, rather diffusely 

 punctured, usually with a shallow central furrow ; elytra 

 short oval, convex, with punctured furrows, interstices flat. 

 L. 1 1. Common. A. aethiops, Herbst. 



S 1, Sides of thorax distinctly rounded ; 

 first tarsal joint equal to second. 



Black, bare ; elytra of female black-blue. Rostrum 

 cylindrical, curved, in female as long as body, in male 

 rather shorter ; eyes not prominent ; forehead wrinkled ; 

 thorax rounded at sides, strongly but not very closely 

 punctured, with a deep furrow before scutellum ; elytra 

 with very fine, indistinctly punctured striae, interstices flat 

 and more than three times as broad as striae. L. IJ 1. 

 Not common. A. sorbi, Herbst. 



S h. Elytra pubescent. 



A 1. Elytra elongate ; length If lines. 



Black, finely pubescent ; elytra greenish-blue. Head 

 elongate ; forehead striate ; rostrum long, much curved ; 

 thorax oblong, cylindrical, closely and distinctly punctured, 

 with a central furrow behind ; elytra elongate oval, very 

 convex behind, with punctured furrows, interstices flat. 

 Not uncommon. A. meliloti, Kirby. 



JB 1. Elytra not elongate; length 1 — 1| 

 lines. 



a 1. Forehead with two or three im- 

 pressed striae. 



