FLIES OF THE GENUS OGCODES — SCHLINGER 305 



Ogcodes {Ogcodes) hennigi, new species 



Plate figures 45, 80, 100 



Species of group v. 



Male: Length of entire specimen 4.50 mm., wing length 3.75 mm., 

 as described for adaptatus, new species, except as follows : 



Head with brown eyes. 



Thorax with upper margin of postalar callus light brown; r-m 

 crossvein present but not distinct; venation about as in plate 3, 

 figure 11; squama with whitish margin. 



Abdomen with posterior white tergal fasciae covering about one- 

 third of segments iii-v, narrower on i and ii ; dorsal pile about as long 

 as tarsal claw, sparse, not appressed; venter mostly white, including 

 one-half of sternite ii and most of l 



Genitalia brown; aedeagus as in plate 8, figure 45; ejaculatory 

 apodeme as in plate 11, figure 80, and plate 13, figure 100. 



Female: Unknown. 



Holotype: Male, Orient, Long Island, New York, June 14, 1954 

 (Roy Latham, USNM 64442). 



Remarks: This rather unique species is apparently connected with 

 the European species gibbosus and varius, and although it is not phylo- 

 genetically related to any Nearctic species, it superficially resembles 

 adaptatus; hence, the reference to the latter species m the above 

 description. The aedeagus (pi. 8, fig. 45) of hennigi is distinct from 

 all known species, but the ejaculatory apodeme, particularly the 

 ventrally incomplete basal cell, pomts to a Holarctic connection 

 (compare pi. 13, figs. 100 and 109 of varius), as well as other possibly 

 related species with a similar development (see pi. 13, figs. 99, 101, 

 108, 112). 



This species is named for Dr. Willi Hennig, who has been of great 

 assistance to me in this and other acrocerid projects. 



Ogcodes (Ogcodes) bohartij new species 



Plate figures 42, 104 



Ogcodes pallidipennis (western subspecies ?), Sabrosky, in part, Amer. Mid. 

 Nat., vol. 39, pp. 417-418, 1948 (not Loew, 1865). 



Species of group v. 



Male: Length of entire specimen 5.5 mm., wing length 4.75 mm. 



Head reddish brown except black ocellar tubercle and grayish 

 black occiput and frons. 



Thorax black except for light brown anterior angles of metanotum, 

 and dark brown posterior tip of humerus, pleura below (light brown 

 above), and large white interpleural area; most of thorax covered 

 with short, nearly erect, yellowish white pile, a little longer on pro- 



