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U.S. NATIONAL MUSEUM BULLETIN 27 7 



70. Scenopinus reduncus, new species 



Figure 70 



This species is closely related to S. lincinus, S. fraternus, S. fryeri, 

 S. nitidulus and perhaps to S. longiventris. It can be separated by 

 the wing venation where cell R5 is sharply narrowed at the tip of 

 the wing and by the shape of the bursal plate. 



Figure 70. — Scenopinus reduncus, new species, female: a, wing; b, c, lateral and frontal as- 

 pects of head; d, enlarged detail of antenna; e, dorsal aspect of 8th and 9th terga with 

 outline of 8th sternum;/, lateral aspect of 8th and 9th segments; g, ventral aspect of 9th 

 sternum and bursa. 



Female. — Head black-brown; eyes black-brown, with a narrow, 

 sunken postocular ridge; frons broad subshining, with a median 

 depression on the lower half, ocellar triangle not set off, median ocellus 

 sunken; ocelli red-orange. Mouthparts well developed, brown; palpi 

 shorter than rostrum and labellum; back of head concave, pollinose. 

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

 first; third pear-shaped, velvety with a distolateral pit. 



Thorax black-brown, subshining, a few sparse hairs. Humeral 

 callus with a tan lateral spot. Wings smoky-brown, veins brown; 

 halter stem tan, knob tan, velvety above, white below. Legs black- 

 brown with red-brown tarsi. 



Abdomen red-brown subshining. See figure for details of eighth 

 and ninth segments and bursa. 



