8 



PROCEEDINGS OF THE NATIONAL MUSEUM 



segments in proportion of 16-11-12-13-13-13-13-14-17-18-22-27-39, 

 antennal ratio 1.15 (1.09-1.19, n=7); xi with distinct preapical 

 constriction; distal sensory tufts on segments in, xiii-xv, occasionally 

 also on xii. Palpal segments (fig. 2c) with lengths in proportion of 

 7-24-26-13-14; third segment very slender, 3.6 (3.2-4.3, n=16) 

 times as long as greatest breadth (4.3 in holotype), with a small, 

 round, deep, distal sensory pit. Proboscis moderately long, P/H ratio 

 1.0; mandible with 17 (16-20, n=28) teeth. 



Thorax: Unicolorous dark brown. Legs dark brown, tibiae without 

 proximal pale rings; hind tibial comb with 5 spines, the one nearest 

 the spur longest. 



Figure 2. — Culicoides puracensis, new species, female (except as noted): a, antenna; b, 

 eye separation; c, palpus; d, spermathecae; e, male paramere;/, male genitalia, parameres 

 not shown. 



Wing (pi. 1 : fig. 3) : Pattern as figured ; 3 anterior pale spots, 

 variable in size and intensity, a variable one over basal arculus, 

 second over r-m crossvein and meeting costal margin broadly and 

 media slightly (sometimes much reduced as in specimen figured) ; 

 third or poststigmatic spot covering apex of second radial cell, broad 

 and quadrate and extending caudad three-quarters way to vein Ml; 

 an indistinct pale area midway in cell M2 between medial and medio- 

 cubital forks; pale spots absent in distal parts of cells R5 and M2, 

 no pale spots in cell Ml; a moderately large, fairly distinct pale spot 

 distally in cell M4 and a slightly smaller pale spot distally in anal 

 cell near mediocubital stem in anterior half of cell. Macrotrichia very 



