NO. 1487 NORTH AMERICAN DIGGER WASPS— FERNA LI). 811 



41. With a small pubescent spot above the middle and hind coxse. 



rroferoxpltt'.v JiraMlUmiim (Saui?sure) (p. 412). 

 Without these pubescent spots 42. 



42. With pubescence on thorax and median segment 43. 



Without such pul)escence Froterosp]icr hridvelll. (H. Fernald) (p. 384). 



43. Tihipe and tarsi rusty j-ellow 44. 



Tip of hind tibia" and the hind tarsi black. 



Proteros2}hfi.rfairitarsisiheringii (Kohl) (p. 381). 



44. Wings fuliginous with violet reflection. 



ProtcroKpJie.r Jlaritari^is H. Fernald (p. 379). 

 Wings not fuliginous 45. 



45. Wings with a distinct yellow tinge. 



Protei'osj)}ie.r Jiarifarsis ifdussurel H. Fernald (p. 381). 

 Wings pale, without a yellow tinge. 



Proterosphe.r faritarsi!^ (jualemalensis (Cameron) (p. 381). 



46. Longer body hairs jjlack 47. 



Longer body hairs not black 48. 



47. Wings rusty yellow or yellowish brown. 



Proteroaplii'.r (■(illginoi<inii (Frichson) (p. 403). 

 Wings deep fuliginous, with violet reflection. 



Proterosplicx pensylranicum (Linna'us) (p. 405). 



48. Pubescence golden yellow ProterospJiex habeiium (Say) ( p. 374). 



Pubescence pale yellow or nickel in color. 



Pwterosphe.r brasilianum (Saussure) (p. 412). 

 Pubescence dull white Proterosphex mundibuluris (Cresson) (p. 410). 



49. Hind tibia- suddenly thickened at the end on the inner side. 



Proterosphex ciibensis H. Fernald (p. 367). 

 Hind tibife not suddenly thickened 50. 



50. Hind metatarsus distinctly curved its entire length. 



Proterosphex tepanecnm (Saussure) (p. 377). 

 Hind metatarsus not noticeably curved 51. 



51. Hind edge of last dorsal abdominal segment above, truncated 52. 



Hind edge not truncated ( with a central emargination or notch in some cases) . 55. 



52. Tibia' and tarsi rusty yellow <^3. 



Tip of hind tibia and entire hind tarsus black. 



Proterosphex flaritarsis iheringll (Kohl) [r>. 381). 



53. Wings fuliginous ^\^th violet reiiection. Proterosphex flavitarsis H. Fernald (p. 379). 

 Wings not fuliginous - 54. 



54. Wings with a distinct golden tinge. 



Proterosphex flavltarsissaussurei a. Fernald (p. 381). 

 Wings pale, without a yellow tinge. 



Proterosphex flavitarsis guatemalensis (Cameron) (p. 381). 



55. Seventh ventral abdominal plate with a central spine (sometimes hidden under 



the sixth plate) Proterosphex splniger (Kohl) (p. 392). 



Seventh ventral abdominal plate without a spine 56. 



56. Legs partly or wholly rust red or rust yellow 57. 



Legs black *'•*• 



57. Abdomen more or less red or yellow *>0- 



Abdomen Ijlack •'^8. 



58. Wings nearly hyaline; hind tibia- (and tarsi except terminal segment) yellow 



or red - ^9. 



Wings strongly fuliginous; hind legs entirely black. 



Proterosphex beatiun (Cameron) (p. 411). 



