432 PROCEEDINGS OF THE NATIONAL MUSEUM 



Figure 74.— Culicoides gabddoni Ortiz, a-e, Female: a, wing; b, thoracic pattern; c, palpus; 

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



cell M4, and anal cell; pale spot in anal cell sometimes extending to 

 wing margin; pale spot present behind medial fork, but no pale spot 

 present in front of mediocubital fork. Macrotrichia practically 

 absent, a few in rows in apices of cells R,, Mi and M2; costa extending 

 to 0.62 (0.59-0.65, n=14) of distance to wing tip. Halter pale. 



Abdomen.— Dark brown, cerci yellowish. Spermathecae two, ovoid, 

 slightly unequal, measuring 0.045 by 0.028 mm. and 0.036 by 0.026 

 mm., the bases of the ducts sclerotized a short distance. 



Male genitalia: Ninth sternum with very slight caudomedian 

 excavation; ninth tergum short and tapering, with long, slender 

 apicolateral processes, the caudal margin between the processes 

 straight. Basistyle with foot-shaped ventral root, dorsal root stout 

 and nearly as long; dististyle short and slender, nearly straight with 

 hooked apex. Aedeagus with basal arch attaining one-half to two- 

 thirds of total length, rounded mesally, the basal arms stout and 



