182 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 105 



wing hyaline. Calypters yellotvish. Halters yellowish, tips brown. 

 Abdomen black, segment 2 reddish black. Yellow band at junction 

 of segments 2 and 3. Narrow yellow pollinose distal margins on seg- 

 ments 3-5. Segments 6 and 7 nearly entirely gold pollinose. Geni- 

 talia reddish black. 



Female: Length Sji mm. Similar to the holotype male, but more 

 blackish. Black on face more extensive. Facial gi'ooves dorsally 

 with bilateral shiny spot. Rufous on face confined to bilateral spot 

 below base of antennae. Cheeks rufous, theca long, blackish. Ab- 

 dominal segment 2 black. 



Variation (in paratypes): Length 7}2-10 mm. One male, similar 

 to the type, but black more extensive. Cheeks blackish. Antennal 

 segment 2 twice length of segment 1. One male similar to the holo- 

 type male but antennal segments 1 and 2 as rufous as segment 3. 

 Front yellowish except stripe above base of antennae giving the black 

 pattern a T shape. Hyaline area of wings darker, so that pattern 

 extends into first basal cell, but is paler than in submarginal cell. 

 One male, similar to the holotype male, but black areas darker. One 

 male, similar to the holotype male, but antennae more rufous, dark 

 areas more blackish. Black of face extends as a narrow stripe onto 

 the cheeks. One male, similar to the holotype male, but reddish on 

 front more yellowish giving the black a T shape. Pollen on abdomen 

 relatively indistinct. One male, similar to the type, but black areas 

 darker, front -with dark yellowish red leaving a black T. One male, 

 similar to the type, but with yellowish rim on front leaving black T. 

 Antennae more rufous. 



Types. Holotype, male (USNM 62431), Maracaju, Mato Grosso, 

 Brazil, May 1937, R. C. Shannon. Allotype (BM), Nova Teutonia, 

 Santa Catarina, Brazil, June 3, 1939, F. Plaumann. Paratypes: 

 Brazil: 2 males (BM), Nova Teutonia, June 12, 1939, F. Plaumann; 

 1 male (BM), Nova Teutonia, June 6, 1937, F. Plaumann; 1 male 

 (BM), Nova Teutonia, June 2, 1939, F. Plaumann; 1 male (AMNH), 

 Nova Teutonia, June 5, 1939, F. Plaumann; 1 male (AMNH), Nova 

 Teutonia, May 30, 1939, F. Plaumann; 1 male (AMNH), Nova Teu- 

 tonia, F. Plaumann. 



Remarks: This very distinctive new species is immediately recog- 

 nizable by the yellowish rufous antennae. 



Physoconops (Physoconops) varipes (Krober) 



Conops angustus var. varipes Krober, Arch. Naturg., vol. 81, Abt. a, Heft 5, p. 

 153, 1915. 



This form has not been seen, but is here considered a full species. 

 It is related to discalis, infuscatus, and angustus, but has a black T 

 pattern on a yellow front. 



Range: Paraguay. 



