60 



ArsiR.Vl.lAN IMXIU.K. 



niXA FLAVICOLLIS, ii.sp. 



ViK. 1. Hvpopyuium of D. JlavicoUi.i fiom al'ovc ;iiul from the side. 



Male: Face and snout dark yellowish; palpi black; 

 antenna' with scape brown, flavcelluni black; vertex black, 

 shininp:. Thorax rather dull oranc:e, with exception of the 

 prothorax blackish; on the middle of the mesonotum. anterior- 

 ly, there is the bejrinning of a dark band, another dark band on 

 the pleurje between the front and the hind coxae; a brownish 

 space below the wind's base; coxas yellow, also the base of 

 femora, which are gradually darker towards their extremity, 

 the hind rnes lighter; tibiie and tarsi brown; apical swelling; 

 of hind tibiie very conspicuous, claws large; halteres with 

 orange stem and light brown knob. .Abdomen brownish 

 black, little shining; hypopygium large, completely black; 

 wing nearly hyaline with a small infuscated spot on r-iu. 



Antennae short, somewhat less than the head and thorax 

 together, with very distinct joints in the flagellum, the basal 

 ones being rath(.'r short and fusiform. The palpi with a 

 short first joint, the second and third subecjual. about four 

 times as lo/ig as wide, last joint about twice the length of 

 the third. 



Venation: Origin of lis well after the tip of Sc; r-vi before 

 fRs; first part of the stem of Rs three times larger than the 

 second part; stem of K._, _■ 3 distinctly larger than K'.j 



Hypopygium small, the lamella? showing between the base 

 of the side i>ieces presenting rounded angle; apical internal 

 process of the side pieces axe-sha})ed, rather short and hairy on 

 their whole surface ;claspers shorter than the side pieces, sub- 

 cylindrical at base, and then suddenly curved downwards 

 and tapering into an acicular extremity; a?d<x?agus little 

 developed, without any conspicuous hook or process. 

 Length of wing: 3 mm. 



