530 



nearly to the paraptera; black stripe of the mesopleural suture widest 

 just caudad of the mesinfraepisternum, extending onto and covering 

 about the dorsal third of that sclerite, the stripe continuous at the 

 caudal extremity with a narrow stripe extending ventrad along the 

 caudal margin of the mesepimeron to the interpleural fold ; metapleural 

 suture with a black spot adjacent to the wing bases ; remainder of the 

 thorax buff or blue; legs striped, buff and black, the coxae and 

 trochanters usually pale, the femora with broad dorsal stripes from 

 bases to apices; tibiae with dorsal stripes covering about half the dorsal 

 surface and including the cephalo-ventral row of setae ; tarsi and claws 

 pale, black at the tips, the claws very long ; wings with nine to eleven 

 postnodal cross-veins and with Mg arising near the fifth postnodal 

 cross-vein in the front wing and between four and five in the hind 

 wing. 



Abdomen black and blue or buff; terga i-6, inclusive, blue or 

 buff, except a small black basal spot on one, a black apical ring and 

 dorsal spot occupying half the second and third terga, another covering 

 slightly more than half the fourth, two-thirds of the fifth and sixth, 

 and all of the seventh except the narrow lateral marginal stripes and 

 a basal ring ; dorsum of the tenth tergum black ; eighth and ninth terga 

 entirely blue or buff ; sterna one and 3-8 with a median black line ; anal 

 appendages (Figs. 194, 205) short, the superiors usually black, blunt, 

 and with a narrow notch on the dorsum cephalad of but near the dorso- 

 caudal angle; inferiors paler, the black apices directed strongly dorsad 

 and frequently in contact with the superiors. 



Female. — Color similar to that of the male. 



Head similar to that of the male ; the postocular spots are, how- 

 ever, considerably smaller. 



Thorax similar to that of the male. 



Abdomen with the dorsum of terga i-io with broad, dorsal dark 

 stripes, widened subapically on segments 2-4 inclusive, the pale color 

 occupying the larger part of the lateral surfaces of all terga as lateral 

 stripes which are continuous with the broad uninterrupted basal rings 

 on segments 4-7 and the interrupted ring of the third tergum; sterna 

 1-8 with a mesal black line from the bases to near the apices, the eighth 

 sternum with a long apical seta ; lateral valves of the ovipositor broad, 

 pale, the ventral margins serrate from apex nearly to base, the pro- 

 styles darker on the apical half. 



Measurements 



Length, $ 33 mm. 



Length, 5 32 mm. 



