150 U.S. NATIONAL MUSEUM BULLETIN 2 77 



Thorax, wings, halter, and legs as in male. 



Abdomen red-brown, eighth segment red-brown, sparsely covered 

 with hairs. See figure for details of sternum and bursa. 



Length: Male body 2.7 mm., wing 2.1 mm.; female body 3.2 mm., 

 wing 2.2 mm. 



Type-locality: 6 mi. n. Victoria, Tampico, Mexico; 17 November 

 1946 (M. S. Ross). 



Holotype: Male (CAS) 8923. 



Allotype: Female, Revolution, 9 mi. s.e. of Buena Vista, Chiapas, 

 Mexico; 23 March 1953 (R. E. Bechtel, E. I. Schlinger) in (CAS). 



Paratypes: 19 , same data as allotype (UCalB); 1 cf , 2 mi. s.e., 

 of Revolution, Chiapas, Mexico, 22 March 1953 (R. E. Bechtel, 

 E. I. Schlinger) (UCalB). 



103. Scenopinus schulzi Enderlein 



Figure 101 



Scenopinus schulzi Enderlein, 1934, p. 429. 

 Omphrale caenofrons Krober, 1937, p. 229. 



This very common South American species was described from the 

 female; now the male has been found and is described below with a 

 redescription of the female. 



Male.— Head red-brown; eyes red-brown, darker below; frons 

 narrow triangular, striated; with white pilose bands laterad of oral 

 opening approaching above the antennal bases, area between antennal 

 bases and pilose bands smooth shming; ocellar tubercle red-brown, 

 prominent, ocelli orange; mouthparts well developed, orange-brown; 

 palpi nearly as long as rostrum, orange basally, black-brown distally. 

 Antennae red-brown; first segment short; second twice as large as 

 first; third elongate, three times as long as first two combined, darker 

 at tips. 



Thorax dorsum black with a silvery pilose area above humeral 

 callus which is red-brow^n, as is the supra-alar callus; pleural areas 

 black-broAvn, shining. Wings hyaline, veins brown; halter stem brown, 

 knob mahogony brown; fore and middle legs orange-brown, hind 

 leg with coxa and femur red-brown, remainder orange. 



Abdomen dark red-brown, segments 3 and 4 with moderately wide 

 white posterior margins, segment 5 with a very narrow white margin, 

 terminalia black, cleft so there is a wide dorsal and a narrow ventral 

 piece; see figure for details. 



Female. — Head black; eyes reddish black, with a very narrow 

 postocular ridge; frons broader than the ocellar triangle, with a 

 shallow pit on the lower portion, subshining, with transverse rugose 

 stria tions below the pit, red-brown area anterior to the center of the 



