FLIES OF THE GENUS OGCODES — SCHLINGER 263 



guttatus). Likewise it seems that crassitibialis Brunetti may be 

 clavatus, while sorellus Brunetti was found to be a synonym of cafer 

 Loew. Thus, a tentative estimate of the number of Ethiopian Ogcodes 

 species is 12. 



Ahhough specimens representing at least four species have been 

 examined, only two of these can be properly determined and dis- 

 cussed at this time. 



Ogcodes (Ogcodes) caffer Loew 



Plate figures 19, 69, 93 



Oncodes caffer Loew, Vet. Akad. Forhand., vol. 14, p. 368, 1857; Dipt. Sudafrika, 



p. 255, 1860. 

 Oncodes sorellus Brunetti, Ann. Alag. Nat. Hist., vol. 18, p. 603, 1926. New 



synonymy? 



Type locality: Africa: Caffrerei, cajjer; and Natal, sorellus. 



Discussion: This species is a member of group ii. The examina- 

 tion of seven specimens from South Africa, which fit Loew's description 

 of cajfer well, were compared with the original description of sorellus, 

 and no significant differences could be found. Brunetti was appar- 

 ently unaware of cafer when he described sorellus, just as he ignored 

 nearly all the described species of the genus at the time of his publica- 

 tion (1926). As pointed out by Sabrosky (1950) and by this author 

 under various species in the text, it seems probable that man}- of 

 Brunetti's species may fall into synon3'my as they become better 

 known. 



The species cajffer appears to be more closely related to the Palaearc- 

 tic zonatus Erichson and the Nearctic eugonatus Loew than to any 

 other known species. The abdominal pattern of the latter species was 

 nicely drawn by Cole (1919, pi. 15, fig. 42) as marginatus Cole, and 

 serves to illustrate the pattern of carffer. The slight differences noted 

 in the wing venation among these three related species are shown in 

 plate 4, figures 18, 19, and differences in male genitalia are shown in 

 plate 10, figure 69; plate 11, figures 71, 73; plate 12, figures 93, 94. 

 Otherwise the description of cajjer fits that given for eugonatus (see 

 below). 



Specimens examined: 6cf , 1 9. 



South africa: 2cf , 1 9 , Cape Province, Matjesfontein, Oct. 6-15, 1926 (R. E. 

 Turner, BMNH, EIS); 4cf, Cape Town, iMilnerton, January 1926 (R. E. Turner, 

 BMNH). 



A female from Cape Province, Swellendam, February 1932 (R. E. Turner, 

 BMNH), also was e.xamined. It belongs in the eugonatns group, but apparently 

 is distinct from caff'er, at least by its general coloration. 



