FLIES OF THE GENUS OGCODES — SCHLINGER 307 



Ogcodes (Ogcodes) canadensis, new species 



Plate figures 49, 105 



Species of group v. 



Male: Length of entire specimen (head missing) 3.40 mm., wing 

 length 3.88 mxm. 



Thorax entirely shining black, covered with short yellowish white 

 pile; legs black, except for brown fore and mid tibiae, even light 

 brown along inner margin, fore and mid tarsi somewhat browned, 

 pulvilli grayish black; wing hyaline, only costal veins dark brown, 

 vein Ml present but faint, r-m crossvein present but short and faint, 

 m-cu crossvein absent, vein Ms short and pale, vein M4 truly veinlike 

 only after bend near r-m crossvein (venation about as in fig. 11); 

 squama opaque white except for large dark brown basal spot which is 

 more transparent than rest of squama, squamal margm dark brown, 

 halter black, stem white. 



Abdomen black, covered with short, sparse, white pile, tergites 

 ii-vi with narrow j^ellowish white posterior fasciae, each occupying 

 about one-sixth of each tergite, tergite i black; sternites ii-vi brownish 

 black with fasciae as on tergites but slightly wider, sternite i entirely 

 brownish black. 



Genitalia dark brown; aedeagus as in plate 8, figure 49; ejaculatory 

 apodeme as in plate 13, figure 105. 



Female: Unknown. 



Holotype: Male, Houghron, Ontario, Canada, July 26, 1951, 

 Forest Insect Survey, No. 051-140G (CNM). 



Paratype: 1 c^, Ottawa, Canada, July 26, 1942 (A. Brooks, CNM). 



Remarks: Although canadensis possesses characters that are inter- 

 mediate between boharti and sabroskyi, it appears to be closely related 

 only to the latter (see text fig. 2). The features of the aedeagus and 

 the dark basal squamal spot easily separate canadensis from all other 

 Nearctic Ogcodes species. The paratype male of this melanic species 

 agrees essentially with the holotype, but the abdominal fasciae are 

 nearly white, and the squamal spot is slightly less infuscated. 



Ogcodes {Ogcodes) sabroskyi, new species 



Plate figures 44, 107 



Species of group v. 



Male: Length of entire specimen 3.30 mm., wing length 2.90 mm. 



Head reddish brown, occiput black, narrow, flattened behind. 



Thorax covered with very short golden appressed pile, that on 

 scutellum somewhat longer and less appressed, black except for dark 

 brown anterior angle of metanotum, and blackish brown over most of 

 plura with several large wliite interpleural areas above; pile of pro- 



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