140 U.S. NATIONAL MUSEUM BULLETIN 2 77 



Abdomen red-brown. See figure for details of eighth segment and 

 bursa. 



Length: Female body 2.3-2.7 mm., wing 1.8-2 mm. 



Type-locality: Buckeye, Arizona; 16 July 1940 (L. C. Kuitert). 



Type: (UKan). 



Female described from Andreas Canyon, Riverside Co., California; 

 10 May 1954 (Timberlake) (CAS) no. 8917 (Ex [PHT]). 



Other specimens seen: Icf, Black Mountain, Arizona, 13 July 

 1932 (R. H. Beamer) (UKan); 1 9, Morongo Valley, San Bernardino 

 Co., California, 30 August 1956 (Timberlake) (PHT); 2 99, Las 

 Cruces, New Mexico, 9 and 20 July 1960 (J. G. Watts) (USNM) ; 

 Icf, Mesilla, New Mexico, September 1896, from granary (Th. 

 D. A. Cockerell) (USNM); Icf, El Paso, Texas, 13 May, (Cockerell) 

 (USNM); Icf, Mesilla Park, New Mexico (C. N. Ainslie) Webster 

 no. 5095 (USNM); Icf, San Diego Co., California, 23 May, (E. P. 

 Van Duzee) (CAS); 1 d", Mesa, Arizona, 9 June 1955 (G. D. Butler) 

 swept/alfalfa (UAriz); 1 cf, Kyrene, Arizona, 11 July 1955 (O. L. 

 Barnes) swept/alfalfa (UAriz); 1 cf, Casa Grande, Arizona, 20 June 

 1956 (G. D. Butler) swept/alfalfa (UAriz); 1 cf , Helendale, California, 

 19 April 1959 (Timberlake) (PHT). 



96. Scenopinus magdalenai, new species 



Figure 94 



Male. — Head black; eyes red-brown above, dark red-brown below; 

 frons subshining, extending one-third the distance from the antenna 

 to the ocellar triangle, with a converging groove above the antennae 

 and a pit at the apex of the frontal triangle ; ocellar triangle set low at 

 back of head; ocelli red-brown. Mouthparts black-brown, well devel- 

 oped; back of head concave, subshining; little or no genal area. 

 Antennae with first segment black, short; second segment short, red- 

 brown; third segment black-brown with short hairs, elongate, over 

 twice as long as wide. 



Thorax dorsum black, with silvery pilose area above the humeral 

 callus; humeral and supra-alar calli red-brown; pleural area black- 

 brown. Wings hyaline, veins brown; halter stem brown, knob red- 

 brown; legs with all femora dark red-brown; tibiae and tarsi of first 

 two pairs orange-brown; hind legs with tibiae brown, tarsi yellow. 



Abdomen black-brown, segment 3 with broad white posterior 

 margin, segments 4 and 5 with very narrow bands. See figure for 

 details of terminalia. Primary difference is in structure of ejaculatory 

 syringe and accessory structures. 



Female. — Head black, eyes dark red-brown with a narrow post- 

 ocular ridge and well-developed genae behind and below the eye; frons 



