BITING MIDGES — WIRTH AND BLANTON 



301 



13. Culicoides rostratus Wirth and Blanton 



Figure 16 



Culicoides rostratus Wirth and Blanton, 1956, Proc. Ent. Soc. Washington, vol. 

 58, p. 219 (male, female; Panama; fig. wing, palpus, spermatheca, male 

 genitalia). 



Female: Length of wing 1.13 (1.06-1.19, n=9) mm. 



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

 proportion of 25:17:17:19:19:19:19:19:24:24:26:32:45, antennal 

 ratio 0.98; distal sensory tufts present on segments iii, xi-xv. 

 Proboscis elongate, its length to base of palpi about 1.2 times height 

 of an eye. Palpal segments in proportion of 8:32:43:17:17, second 

 segment long and fairly stout, third segment moderately swollen on 

 proximal two-thirds, 2.6 (2.3-3.1, n=8) times as long as broad, with 



Figure \6.— Culicoides rostratus Wirth and Blanton. a-e. Female: a, wing; b, thoracic 

 pattern; c, palpus; d, tibial comb; e, spermathecae. /, g, Male:/, parameres; g, genitalia, 

 parameres removed. 



475684 O - 59 



