348 PROCEEDINGS OF THE NATIONAL MUSEUM vol. lie 



5. Abdomen almost entirely yellow, occasionally some black on the first 



tergum ; prominent yellow patch on propodeum often C-shaped. 



sandiegensis ScuUen 



Most terga deeply emarginate with black; band on tergum 2 broader than 



others; propodeum with little or no yellow . compacta compacta Cresson 



6. Black with limited yellow markings; wide yellow band on distal half of 



tergum 2; no red or amber . . . flavofasciata flavofasciata H. S. Smith 



Head and thorax mostly reddish amber; first tergum reddish amber; second 



tergum reddish amber anteriorly, often wath a yellow line posteriorly; 



terga 4, 5, and 6 dark amber to black . flavofasciata floridensis Banks 



7. Lamella bent at about 45° angle to plane of clypeal process. 



squamulifera Mickel 

 Lamella slightly or not at all bent from the plane of the clypeal process . . 8 



8. Lamella undivided to base, border might be slightly emarginate .... 9 

 Lamella divided to base, divisions more or less completely separated . . 10 



9. Black and yellow; no reddish amber robertsonii robertsonii Fox 



Prothorax, scutellum, metanotum, basal two or more terga, and legs mostly 



reddish amber robertsonii emmiltosiis Scullen 



10. Black and yellow robertsonii bifidus Scullen 



Prothorax, scutellum, metanotum, basal two terga, and legs reddish amber 

 with traces of yellow robertsonii miltosus Scullen 



Group IV 



1. Length 1.5 to 18 mm.; punctation deep and close. 



macrosticta Viereck and Cockerell 

 Length 10 to 12 mm.; punctation fine and more widely separated .... 2 



2. Body colors black and yellow with very little or no amber. 



femurrubrum athene Banks 

 Body colors amber and cream with very little black or none at all. 



femurrubrum femvirrubrum Viereck and Cockerell 



Group V 



1. Clypeal elevation low and rounded without a distinct point 2 



Clypeal elevation not low and rounded but sides converging to a distinct 



apex, which may be blunt, approximately perpendicular to the surface; 

 lower surface of elevation smooth and concave or fiat 5 



2. Color markings dark red rufa ScuUen 



Color markings yellow or cream 3 



3. Subequal narrow bands on all terga compar compar Cresson 



Band on tergum 2 absent or reduced to small lateral patches on the posterior 



margin 4 



4. Usually a single elongate patch and rarely a second smaller yellow spot on 



the propodeum; band on tergum 3 more or less emarginate on the anterior 

 margin; small yellow spots usually on the lateral posterior angles of ter- 



g'lm 2 compar geniculata Cameron 



Markings on propodeum fused, or nearly so, to form a hook-shaped patch; 

 wide complete band on tergum 3; somewhat smaller than the latter sub- 

 species compar orestes Banks 



5. Second tergum with a band equal to or wider than that on other terga. 



zelica Banks 



Second tergum immaculate or with small lateral spots on the posterior margin; 



bands on other terga subequal 6 



