no. 3604 GLYPTOSCELIS — BLAKE O 



2. Pubescence erect and fine, not obscuring surface below, elytra without 



humeral prominences (Sonoma Co., Calif.) . . . cylindrica, news pecies 



Pubescence appressed and coarse, more or less obscuring surface below, 



elytra with well-marked humeral prominences 3 



3. Pubescence on pronotum consisting of broad, often truncate scalelike hairs . 4 

 Pubescence on pronotum not broad or in form of scalelike hairs .... 5 



4. Pubescence on elytra white with lines of brown hairs forming vittae. (Inyo 



Co., Calif., and nearby) alternata Crotch 



Pubescence on elytra without lines of brown hairs (California, Nevada, 

 Arizona) squamulata Crotch 



5. Large (9-11.5 mm.) pubescence on elytra with pattern of dark and white 



hairs 6 



Usually smaller, without noticeable pattern of pubescence on elytra, hairs 

 more evenly distributed 7 



6. Pubescence on elytra with pattern of white hairs along base, sides, and 



suture and short white vittae near apex, rest of elytra with scanty, in- 

 conspicuous dark hairs, not hiding coppery surface (California and Oregon). 



illustris Crotch 



Pubescence on elytra white with coarse yellowish hairs and traces of dark 



vittae near apex hiding surface (Inyo Co., Calif.) . . . aridis Van Dyke 



7. Beetle distinctly reddish brown with white pubescence (southern Illinois 



to Texas) albicans Baly 



Beetle either reddish brown with brown pubescence or piceous 8 



8. Beetle reddish brown with brown pubescence (New York to St. Louis, Mo.). 



barbata (Say) 



Beetle piceous usually with white pubescence that may be intermingled with 



brown hairs 9 



9. Large (7.5-11 mm.), with pro thorax as wide as elytra, piceous, lightly covered 



with brown and white pubescence (Canada to Gulf of Mexico, Atlantic 



Ocean to Mississippi River) pubescens (Fabricius) 



Smaller (from Mississippi lliver to Pacific Ocean) 10 



10. Aedeagus truncate at apex (on Artemisia tridentata; Oregon, Washington, 



Idaho, British Columbia) artemisiae, new species 



Aedeagus not truncate at apex 11 



1 1 . Pubescence on pronotum with more or less distinct median bare line from 



which hairs spread outwards and downwards (Brownsville, Tex.). 



prosopis Schaeffer 

 Pubescence on pronotum without median bare line 12 



12. Beetle with coppery lustre, pubescence never white, varying from yellowish 



to dark brown (on Sequoia sempervirens, from about San Francisco, Calif., 



to Oregon) sequoiae Blaisdell 



Beetle either piceous black or bronzy, pubescence usually white or mixed 

 with brown hairs 13 



13. Aedeagus triangular at apex (California) aibida LeConte 



Aedeagus not triangular at apex 14 



14. Occiput of head nearly smooth with punctures only along median line; 



elytra with white pubescence forming vittae (on Artemisia tridentata; 



Idaho) paula, new species 



Occiput of head densely punctate 15 



15. Aedeagus broadly rounded at apex 16 



Aedeagus not rounded at apex 20 



