AET. 5 GENERIC REVISION OF THE FOSSORIAL WASPS PARKER 167 



24. Fasciae on tergites narrow; ultimate tergite black fodiens. 



Fasciae on tergites broad; ultimate tergite yellow burmeisteri. 



25. Ultimate tergite with pygidial area and lateral ridges, sometimes weakly 



developed 26. 



Ultimate tergite without pygidial area and lateral ridges 28. 



26. Scutum without discal marks ; mesopleura black, rarely with inconspicuous 



maculation; fasciae on tergites interrupted medially 27. 



Scutum with discal markings ; mesopleura with evident yellow maculation ; 

 fasciae on tergites usually continuous annulata. 



27. Fasciae on posterior tergites shortened or narrowed laterally ; sixth tergite 



black capnoptera. 



Fasciae on posterior tergites not shortened or narrowed laterally ; sixth ter 

 gite with pair of small maculations pexa. 



28. Lateral angles of propodeum acuminate ; all fasciae on tergites continuous. 



angulata. 



Lateral angles of propodeum normal form ; not all fasciae on tergites 



continuous 29. 



29. Mesopleura black 30. 



Mesopleura maculated with yellow more or less 32. 



30. Flagellum and legs for the most part ferruginous ; apex of ultimate tergite 



ferruginous ; fascia on first tergite broad and best developed insidiatrix. 



Flagellum black ; legs black and yellow or black and ferruginous ; ultimate 

 tergite not ferruginous ; fascia on first tergite narrow, not better de- 

 veloped than the others 31. 



31. Ultimate tergite maculated parata. 



Ultimate tergite black ventralis. 



32. Ultimate tergite wholly yellow sola. 



Ultimate tergite black 33. 



Ultimate tergite with lateral maculations 37. 



33. Anterior wing clouded at first cubital cell viduata. 



Anterior wing not clouded at first cubital cell 34. 



34. Fascia on fifth tergite much more widely interrupted than that on the first, 



or it may be lacking ; discal marks on scutum lacking or reduced to nar- 

 row lines quadrifasciata. 



Fascia on fifth tergite always present and scarcely more widely inter- 

 rupted than that on first ; discal marks on scutum prominent spots 35. 



35. Lateral spots on scutellum tending to extend themselves along the anterior 



border of the sclerite ; fasciae on tergites orange yollow spinosa. 



Lateral spots on scutellum tending to extend themselves along the jKtsterior 

 border of the sclerite ; fasciae on tergites creamy yellow 36. 



36. Tibiae marked with black discisa. 



Tibiae wholly yellow mendica. 



37. Fasciae on all tergites interrupted 38. 



Fasciae, one or more, continuous parata. 



38. Scutum without discal markings mesillensis. 



Scutum with pair of discal lines or spots .39. 



39. Fascia on anterior border of scutellum usually narrowly interrupted at mid- 



line variegata. 



Fascia on scutellum reduced to lateral spots that tend to extend themselves 

 along the posterior border of the scutellum discisa. 



