278 ENTOMOLOGICAL NEWS fxXXI, '20 



First joint of hind tarsi long, thicker than second and more than 

 twice as long; vertex sparsely punctulate, not carinate; female 

 abdomen yellow; length 7.5 mm.; Mary\axid . semiflavus LeConte 

 8 — Color honey-yellow; prothorax with sides, median hne and base 

 black; prothorax smooth; male unknown; female abdomen yel- 

 low; length 7.3 mm.; Colorado popenoi LeConte 



Color black; prothorax smooth on disc, coarsely punctulate at base 

 on sides; male abdomen with dark brown luster; female un- 

 known; length 4 mm.; Nebraska minimus Pierce 



g— Female abdomen red or yellowish-red; pygidium reddish; first joint 

 of hind tarsi very long, very little thicker than the second; pro- 

 thorax and vertex densely punctulate, the latter carinate; length 

 8 mm.; Oklahoma and Kansas scaher LeConte 



Female abdomen red, pygidium black; male abdomen black; first 

 joint of hind tarsi stout and very thick, and more than twice 

 as long as the second and the third joints together; male an- 

 tennae honey-yellow (a variety from western Nebraska has 

 the antennae orange color); length 8 mm.; Nebraska; plant 

 host Solidago spp; insect host Epinomia triangulifera Vachal, 



solidaginis Pierce 



ID — Elytra shining yellow, or black only at base; head and prothorax 



densely punctulate 1 1 



Elytra alutaceous, more or less blackish or piceous 13 



II— Elytra entirely yellow; female black; hind tarsi with first joint as 

 long as the others united, scarcely thicker, not emarginate at 

 tip; length 5 mm; California calif ornicus LeConte 



Elytra black at base 12 



12 — Body black; length 6 mm; Pennsylvania, Illinois, and Missouri; 

 insect host Chloralictus pruinosus Robertson . . . .fasciatus Say. 



Female abdomen dark brown; hind tarsi with first joint as long as 

 succeeding three joints; about one and one-half as thick, and 

 slightly emarginate, and obliquely truncate; length 6 mm. 



Nebraska fasciatus Say, var. brunneus Pierce 



13 — Hind tibiae slightly compressed 14 



Hind tibiae strongly compressed; body black; elytra black with 

 dark reddish-yellow spot; length 6 mm; Florida; insect host. 



Augochlora pura Say cf' schwarzi LeConte 



14 — Vertex strongly elevated and compressed; length 6.5 mm.; New 

 York (zeschii LeConte) 9 schwarzi LeConte 



Vertex feebly elevated 15 



15 — Pectus and abdomen densely punctulate; color black; antennae 

 fuscous; legs fusco-testaceous; length 5 mm.; Illinois, New 

 York and Massachusetts walshii LeConte. 



Pectus and abdomen more strongly, less densely punctulate; body 

 black; antennae fusco-testaceous; legs obscurely testaceous; 

 length 2.5 to 3 mm; Canada, New York, and District of Col- 

 urnbia stylopides Newman. 



