BITING MIDGES — WIRTH AND BLANTON 



86. Culicoides stigmalis Wirth 



Figure 89 



467 



Cuhcoides shgrnahs Wirth, 1952, Journ. Parasit., vol. 38, p. 245 (female- Guate- 

 mala; fig wing, palpus, spermathecae) .-Vargas, 1953, Rev. Inst. Salub Enf 

 Trop., vol. 13, p. 229 (male; Oaxaca, Mexico; fig. genitalia). 



Female: Length of wing 0.90 (0.88-0.92, n=9) mm. 



Head.— Eyes narrowly separated, bare. Antenna with flagellar seg- 

 ments m proportion of 17:15:17:18:18:18:18:18:23:23-25-25-25 an 

 tennal ratio 0.91 (0.88-0.94, n=8); distal sensory tufts present on 

 segments iii, viii-x. Palpal segments in proportion of 10-17-25-9-14 

 third segment short and scarcely swollen, 2.2 (2.0-2.5, n=9) times as 

 long as greatest breadth, with a small, shallow sensory pit Mandible 

 with 14 (13-14, n=3) teeth. 



'ffin^^^^^^^^ 





a 



Figure S9. -Culicoides stigmalis Wirth. a-e, Female: a, wing; b, thoracic pattern; ., palpus' 

 d, tibial comb; ., spermathecae. /, g, Male:/, parameres; g, genitalia, parameres removed. 



