FLIES OF THE GENUS OGCODES — SCHLINGER 



273 



Specimens examined: 2 d^, 9 9. 



Belgium: 39, Sutendaal, June 17, 1919 (USNM). 



Germany: Icf, Potsdam, July 5, 1922 (Oldenberg, EIS); Ic?, Frankfurt, 

 Guide, June 24, 1908 (Offenbach, EIS); 1?, Kolkhorst, July 25, 1888 (EIS); 

 1 9 , Berlin, Grunervld., June 15, 1894 (Lichwardt, EIS) ; 1 9 , Munchen, July 10, 

 1911 (EIS); 29, Uckeritz-Usedom, June-July, 1936 (R. Korschefsky, EIS). 



Russia: 1 9 , Araxesthal, Kaukasus, May 13, 1892 (Reitt, VNM). 



Ogcodes species of Nearctic subregion 



Thirteen species of the genus Ogcodes have been described from this 

 subregion that are now considered vahd: albiventris Jolmson, borealis 

 Cole, colei Sabrosky, dispar (Macquart), dusmeti Ai'ias, eugonatus 

 Loew, floridensis Sabrosky, melampus Loew, niger Cole, pallidipennis 

 Loew, rufoahdominalis Cole, shewelli Sabrosky and vittisternum 

 Sabrosky. 0. albiventris is hereby removed from the subgenus Ogcodes 

 to form the type of the new subgenus Neogcodes, while the addition of 

 five new species — adapfatus, boharti, canadensis, hennigi and sabroskyi — 

 brings the total number of known species to 18. These species repre- 

 sent four of the six species groups known for the world, with only the 

 porteri and brunneus groups being absent. 



The distribution of Ogcodes in the central Nearctic area is shown in 

 text figure 4. The unlined parts (Upper and Lower Sonoran Zones) 

 show a paucity of records indicating that these species are obviously 

 more Transitional and Boreal in theu- distributions. Typical species 

 distributional patterns are given for several of the more common 

 species (text figs. 5-9). 



Figure 4. — Distribution of the genus Ogcodes in the United States. 



