FLIES OF THE GENUS OGCODES — SCHLINGER 315 



Discussion: Species of group iv. According to Sabrosky it is 

 closely related to triangularis, and although vein Mi is absent (except 

 dis tally), the general wing venation is quite strong; r-m crossvein is 

 complete, R4+5 is nearly complete and sinuous, vein M2 is virtually 

 complete, and the basal portion of the media and a two-branched 

 cubitus are present. 



The female of kuscheli is quite distinct from the male in coloration, 

 the female having the thorax predominantly golden yellow with three 

 black stripes, while the male thorax is all black. 



Ogcodes (,Ogcodes) porteri Schlinger 



Plate figure 16 

 Ogcodes porteri Schlinger, Wasmann Journ, Biol., vol. 11, p. 319, figs. 1, 2, 1953. 



Type: Holotype cf , Vina del Mar, ChUe, 1910 (Porter, INHM). 



Discussion: Species of group vi. This species, which is known 

 only from the holotype, is apparently one of the most highly evolved 

 Ogcodes, judging from its simplified wing venation with veins Mj, Mo 

 and M4 absent, and its extremely narrow anal area (pi. 4, fig. 16). 

 It also has a very large head which is nearly as broad as the thorax, 

 and a rather large ocellar triangle. The general color pattern is 

 similar to that of certain species of the genus Acrocera. 



Ogcodes species 



A single female specimen of an apparently undescribed species 

 was examined from 50 Ion. east of San Carlos, Nuble, Chile, Dec. 26, 

 1950 (Ross and Michelbacher, CAS). It is definitely a member of 

 the pallidipennis group. This is the first representative of the group 

 from Chile and shows that the group apparently is spread throughout 

 the Neotropical region. The thorax is entirely dark brown and the 

 tergal and sternal fasciae are white on a dark brown ground color, 

 features typical of females of the pallidipennis group. This may be 

 a female of argentinensis, but males will have to be examined from 

 Chile to be sure. 



