2 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 6l 



SOMAPHANTUS LUSIUS, new species 



Four females and one male from Numida ptilorhyncha Lonnberg 

 (Lakiunda and Tana rivers, British East Africa). An elongate, nar- 

 row, pale species with many long hairs (U. S. X. M., Type No. 

 [8182). 



Description of female. — Head three-fourths as long as broad with 

 sides but slightly convex. Front weakly angled on the meson in 

 some specimens as shown in the figure, or evenly rounded as in 

 others, bearing about four hairs on each side, the lateral .one being 

 the longest ; these hairs are not all marginal, some of them projecting 

 from the under side. Sides of the head before the eyes but slightly 

 swollen, bearing four hairs, the posterior three being long ; eye with 

 a prominent black fleck and a long hair ; ocular fringe present, con- 

 sisting of ten or twelve hairs. Antennae (fig. 1 c) prominent with 

 last segment cylindrical, as long as the other three together, of which 

 the second is the longest. Temples compressed, weakly rounded and 

 meeting the almost straight occiput in an obtuse angle ; temple with 

 rive hairs, three of which are long, and occiput with four long hairs ; 

 a long hair on the dorsal surface near the eye and two more, arising 

 close together, a short distance cephalad. The eye flecks and the 

 right mandible are the only dark portions on the insect, these being- 

 black ; the general color of the head, as well as the rest of the body, 

 is a pale yellowish-brown, the occipital region being almost clear and 

 the clypeus slightly darker ; along the margin of the occiput is a 

 narrow chitinous thickening. 



Thorax a little longer than the head. Prothorax broader than long, 

 not quite as wide as the head, rounded, though not as regular as 

 shown in the figure ; a series of ten hairs across the posterior margin 

 and two more on each side ; sides and posterior portion of same color 

 as the head, anterior central portion clear. Metathorax wider and a 

 little longer than prothorax and lighter in color, being quite trans- 

 parent ; sides divergent, bearing four hairs, while across the straight 

 posterior margin is a submarginal series of about twenty hairs, 

 roughly arranged in three rows. Legs pale, with long tarsi and 

 stout hairs on femora and tibioe. 



Abdomen long and narrow, all segments clothed with many long 

 hairs, consisting of the usual submarginal row of twenty to thirty 

 and many others on the dorsal surface ; sutures between all segments 

 are distinct and straight. Width of abdomen gradually increasing 

 to the fifth segment, then narrowing rapidly to the ninth, which is al- 

 most truncate ; last three segments each with a very long hair on each 



