314 NORTH AMERICAN MUTILLIDAE 



Margins of the head converging posteriorly behind the eyes, the angles not 

 prominent, not over one-eighth farther apart than the least distance 

 between the eyes, sometimes less than this; propodeum not separated 

 from the thorax proper (7) 



6. Propodeum with a transverse band of dense black pubescence; color claret- 



brown, with a fringe of silvery pubescence at the apex of each abdominal 



segment rubicunda n. sp. 



• Propodeum without a pubescent band; color mars orange, with two large 

 mikado orange spots on the second dorsal segment; apex of the petiole 

 not pubescent, of the second dorsal segment black pubescent, the fol- 

 lowing three segments entirely griseous anguliceps (Fox) 



7. Margins of the head behind the eyes scarcely converging posteriorly, 



one-eighth wider than the least distance between the eyes; the posterior 

 margin of the head shallowly convex; the extreme width of the head, 

 including the eyes, equal to the width of the thorax chattahoochei n. sp. 

 Margins of the head behind the eyes strongly rounded inwards to the hind 

 angles, shghtly narrower than the least distance between the eyes; 

 posterior margin of the head deeply concave; head slightly wider than 

 the thorax arenerronea n. sp. 



8. Color ferruginous (chestnut to Sanford's brown). 



cypris (Blake), variety cypris (Blake) 

 Color rufo-piceous (between bay and black) . 



cypris (Blake), variety miamensis (Rohwer) 



9. A sharp carina on each side between the eye and the base of the antenna; 



large tomentose species, scarlet or yellow and black, the abdomen 

 scarlet or yellow above, with a transverse black band beyond the 



middle (10) 



Front not carinate; smaller species, never densely tomentose and not 



colored as above (H) 



lO! Color bright scarlet (EngUsh red) occidentalis (Linnaeus) 



Color yellow (raw sienna) comanche (Blake) 



11. Pygidium evenly granulated obscura (Blake) 



i- V Pygidium longitudinally striate (12) 



12. Carina on venter of petiole reduced to an acute, recurved, anterior tooth, 



totally wanting on the apical half of the petiole . . . f errugata (Fabricius) 



Carina on venter of petiole extending its entire length, usually with both 



an apical and basal production, neither acute nor recurved (13) 



13. Head and thorax with conspicuous, appressed, red or yellowish pubescence; 



front more closely punctured than the cheeks; legs ordinarily black. 



vesta (Cresson), race zella Rohwer 



Head and thorax without conspicuous, appressed pubescence; front sparsely 



punctured like the cheeks; legs red, rarely dark sappho (Fox) 



