BITING MIDGES — WIRTH AND BLANTON 



385 



Figure 53. — Culicoides pifanoi Ortiz, a-e, Female: a, wing; b, thoracic pattern; c, palpus; 

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



line along vein Mi; veins Mi and M2 pale margined on their distal 

 halves, the basal pale spot in cell Mi joined to these pale lines, the 

 distal pale spot in cell Mi far removed from wing margin; the two distal 

 pale spots in cell M2 not connected; cell M4 with large pale spot; two 

 pale spots in distal part of anal cell; pale spots lying ahead of medio- 

 cubital fork and behind medial fork joined by a pale area extending to 

 base of wing; proximal fifth of wing pale from costal margin to anal 

 angle of anal cell. Macrotrichia scanty, only a few in cells R5 and Mi ; 

 costa extending to 0.60 (0.58-0.62, n=9) of distance to wing tip. 

 Halter pale. 



Abdomen. — Brown, terga more or less pale; cerci pale. Spermathe- 

 cae two, ovoid, unequal, measuring 0.049 by 0.046 mm. and 0.038 by 

 0.026 mm., the bases of the ducts sclerotized for a distance of about a 

 fourth the length of spermathecae. 



