130 INSECUTOR INSCITI^ MENSTRUUS 



7. Abdominal pile short, black on posterior half ; middle tibiae and 

 tarsi largely black; hind legs with short pile (Idaho), 



bicolorata, n. sp. 

 Abdominal pile concolorous with that on thorax ; legs largely 

 black; hind legs with short pile (lasiophthalma complex) 

 (Colorado, New Mexico, Alaska, New Hampshire, North 

 Carolina) lasiophthalma Will. 



8. Fore coxa with a short but distinct spur on outer anterior 



corner (western America) 9 



Fore coxa without spur 11 



9. Legs entirely black aldrichi Hunter. 



lyCgs partly yellow 10 



10. Female with erect pile of normal length on mesonotum; 



length 10-12 mm. (Brit. Col., Idaho) columbiae Curran. 



Female with short depressed pile on mesonotum ; length 

 7-8 mm. (Colorado) aldrichi-pikei, n. var. 



11. General color steel blue ; apical cross-vein forming an acute 



angle with the third 12 



General color shining greenish black or black ; apical cross-vein 

 bending upright on its distal end and meeting the third in a 

 vertical position, thus forming right angles 13 



12. Pile on pleurae and coxae black (Alaska) alaskensis Hunter. 



Pile on pleurae partly pale; coxae with pale pile (Oregon, 



Washington) burkei, n. sp. 



13. Pleurae with black pile and bristles mixed with the light ; 



antennae black ; length 7.5 mm. (Alaska) borealis Coq. 



Pleurae with only light colored pile ; 9-11 mm 14 



14. "Everywhere profoundly punctured ; wings uniformly, dis- 



tinctly yellowish." Pile on front and mesonotum pale, short 



(Nebraska) .punctulata Hunter. 



Not unusually punctured 15 



15. Face becoming much wider than the front, half the width of 



face, i. e., from tip of oral notch to the eye margin, much 

 wider than width of front measured across ocelli ; antennae 

 reddish yellow (Idaho) florella, n. sp. 



(C sororia, Mexico, with its red antennae and bristleless scutellum 

 probably comes here.) 



Front and face widening evenly from ocelli to lower corners 

 of eyes, half the width of face but little greater than width 

 of front across ocelli 16 



16. Scutellum without bristles ; pile whitish, fairly long and abun- 



dant, giving species a grayish appearance ; antennae brown 

 (California) baroni Will. 



