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PROCEEDINGS OF THE NATIONAL MUSEUM vol. loj 



Figure 46. — Culicoides acotylus Lutz. a-e. Female: a, wing; b, thoracic pattern; c, palpus; 

 d, tibial comb; e, spermathecae. /, g, Male: /, parameres; g, genitalia, parameres re- 

 moved. 



Female: Length of wing 1.05 (0.96-1.11, n=9) mm. 



Head. — Eyes contiguous, bare. Antenna with flagellar segments in 

 proportion of 24:19:19:20:20:20:20:20:22:22:22-22:37, antennal ratio 

 0.78 (0.74-0.80, n=4); distal sensory tufts present on segments iii 

 and from vi or vii to x. Palpal segments in proportion of 

 10:16:32:10:9, third segment moderately swollen, 2.3 (2.1-2.8, n=9) 

 times as long as greatest breadth, without sensory pit, the sensoria 

 scattered on surface of segment. Mandible with 15 (14-15, n=7) 

 teeth. 



Thorax. — Mesonotum and scutellum dark brown, without prominent 

 pattern, in some specimens paler brown in midportion. Postscutellum 

 and pleuron brownish black. Legs dark brown, narrow pale rings at 

 bases of all tibiae and at apex of hind pair; hind tibial comb with five 

 (4-5, n=7) spines, the second from the spur longest. 



