22 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 124 



and appears to lack the pattern of dark punctures over the hairs; leg 

 banding as in the female, but hind tibia dark to tip. Halter with base 

 of knob dark, the end pale. Third palpal segment very short and 

 broad; antenna with flagellar segments in proportion of 30-24-12-12- 

 12-11-11-10-11-11-40-35-38; distal tufts present on xin and xiv. 

 Genitalia as figured (figs. Qi, j) : Ninth sternum with very shallow 

 caudomedian excavation, the ventral membrane not spiculate; ninth 

 tergum with short, pointed apicolateral processes. Basistyle with 

 "foot-shaped" ventral root, a distinct "heel" present; dorsal root 

 slender; dististyle long and slender, with bent pointed tip. Aedeagus 

 with broad basal arch extending to two-thirds of total length, the 

 basal arms strongly sclerotized and irregularly convex laterally; 

 distal stem short with bluntly rounded tip. Parameres each (fig. 6i) 

 with strong basal knob, main portion slightly sinuate and moderately 

 stout, no ventral lobe present; distal portion gradually narrowed, 

 abruptly twisted to sharp distal point and bearing a lateral subapical 

 fringe of 5-6 fine spines. 



This species is very similar to C. caucaensis, new species, but is 

 much smaller in size, there is only one poststigmatic pale spot in cell 

 R5, only one distal pale spot in anal cell, and the distal pale spots in 

 cells Ml, M2, and M4 are quite distinct; sensoria are not present on 

 antennal segments ix and x, and the palpal pit is small and deep. 



References 



Chapman, F. M. 



1917. The distribution of bird-life in Colombia: A contribution to a bio- 

 logical survey of South America. Bull. American Mus. Nat. 

 Hist., vol. 36, 729 pp. 

 Espinal, L. S., and Montenegro, E. 



1963. Formaciones vegetales de Colombia. Bogota: Dept. Agrolugico. 

 Inst. Geogr. Agustin Codazzi, 201 pp. 

 Forattini, O. P. 



1957. Culicoides da Regiao Neotropical (Diptera, Ceratopgonidae) . Arq. 

 Fac. Hig. Saude Publ. Univ. Sao Paulo, vol. 11, pp. 161-526. 

 Vargas, L. 



1960. The subgenera of Culicoides of the Americas (Diptera, Ceratopo- 

 gonidae). Rev. Biol. Trop., vol. 8, pp. 35-47. 

 Wirth, W. W., and Blanton, F. S. 



1959. Biting midges of the genus Culicoides from Panama (Diptera: Hel- 

 eidae). Proc. U.S. Nat. Mus., vol. 109, pp. 237-482. 



U.S. GOVERNMENT PRINTING OFriCE:l967 



