516 



Thorax brown or violet and black ; caudal lobe of the pronotum 

 black and brown, the brown in lateral spots on the lateral margins 

 and in a very small median spot ; median lobes each with a large sub- 

 circular, lateral buff spot; proepimera buff, with dark lines marking 

 the dorsal border ; mesothorax with a black line on the dorsal carina 

 and another just ventrad of the mesopleural suture and contiguous 

 with the longitudinal portion of the suture for more than one-half its 

 length; dorsal third of the mesinfraepisternum black; metapleural 

 suture with a black line; metepimera and postcoxal areas buff; legs 

 striped, all the femora with a black stripe on each side of the dorsal 

 carina and the tibiae with a ventral stripe including one of the rows of 

 setae ; tarsi dark brown or black, the claws also black ; wings clear, the 

 stigma surmounting a single cell or less, the postnodal cross-veins of 

 the front wing thirteen to fourteen, of the hind wing ten to eleven ; 

 M2 arising between the fifth and sixth postnodal cross-veins in the 

 front wing and Ijetween the fourth and fifth in the hind wing. 



Abdomen purple and black, or brown and black ; first tergum with 

 a narrow, basal, black, transverse stripe, the second with large lateral 

 spots extending from the cephalic margin nearly to the apex ; terga 

 three and four brown or purple, with the exception of a caudo-lateral 

 spot on each side ; tergum five with a dark apical ring and narrow 

 lateral black stripes, the sixth with the purple confined to a dorsal stripe 

 and a basal ring, the remainder of the tergum black or dark brown ; 

 seventh tergum entirely black, eighth, ninth, and tenth blue on the 

 dorsum, black on the lateral surfaces; sterna i-io black; anal appen- 

 dages (Figs. 145, 146) consisting of short blunt superiors and longer 

 bifurcate inferiors. 



Female. — Color, dark brown or dull violet. 



Head similar to that of the male. 



Thorax: dorsal mesostigmal plates (Fig. 142) with large 

 rounded lobes at the caudo-mesal angles. 



Abdomen with more black than the male ; terga 2-9 with dorso- 

 lateral stripes which are broad enough on the seventh and eighth terga 

 to fuse on the meson ; lateral surface of tergum nine and all of ten buff, 

 dorsal emargination of the tenth nearly reaching the base of the seg- 

 ment ; anal appendages and ovipositor of the usual type, the lateral 

 valves of the ovipositor being serrate on the ventral margin, the pro- 

 styles, dark. 



Measurements 



Length, $ 32 mm. 



Length, 9 31 mm. 



Length of abdomen, $ 24 mm. 



