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a membranous tissue, in the center with a flattened lobe whose cau- 

 dal margin is conspicuously bilobed. Eighth sternite with the caudal 

 margin bearing a flattened, médian lobe that is slightly narrowed 

 basally, the apex rounded. 



There is some variation in color in the above séries of spécimens. 

 One maie has the second and third abdominal sternites indistinctly 

 reddish basally. A female has the antennal flagellum light brown. 

 The amount of orange on the mediotergite of the mesonotal post- 

 notum is generally more extensive in the female than in the maie. 



