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PROCEEDINGS OF THE NATIONAL MUSEUM 



spot filling apex of cell to wing margin; area between medial and 

 mediocubital forks continuously pale, connected by a pale line to 

 broad basal pale area of wing. Costa extending to 0.71 (0.69-0.74, 

 n=7) of distance to wing tip; second radial cell extremely long and 

 narrow, appearing obsolete in most specimens; macro trichia very 

 sparse, confined to a few in apices of cells R5 and Mi. Halter pale. 



Figure 86. — Culicoides pachymerus Lutz. a-e, Female: a, wing; b, thoracic pattern; c, pal- 

 pus; d, tibial comb; e, spermathecae. f-h, Male:/, paramere, lateral view; g, parameres; 

 h, genitalia, parameres removed. 



Abdomen. — Yellowish with brownish segmental, pleural and tergal 

 spots. Spermathecae two, pyriform, subequal, relatively small, each 

 measuring 0.036 by 0.026 mm., the bases of the ducts not sclerotized. 



Male genitalia: Ninth sternum with yqtj shallow caudomedian 

 excavation; ninth tergum short and quadrate, caudal margin some- 



