BITING MIDGES — WIRTH AND BLANTON 



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Figure 4. — Culicoides heliconiae Fox and Hoffman, a-e, Female: a, wing; b, thoracic 

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

 parameres removed. 



costa extending to 0.68 of distance to wing tip. Halter yellowish 

 white. 



Abdomen. — Black, cerci yellowish. Spermathecae two, slightly 

 ovoid, unequal, measuring 0.065 by 0.053 mm. and 0.051 by 0.042 

 mm. 



Male genitalia: Ninth sternum with very shallow caudomedian 

 excavation; ninth tergum rounded caudad, without apicolateral proc- 

 esses- Basistyle with ventral and dorsal roots not developed, mesal 

 margin without spinose setae. Aedeagus twice as long as basal 

 width, transverse sclerotized band strong, apex with internal peg and 

 slender, spherical tip. Parameres fused on basal two-thirds, fused 

 part slightly broader than long, bases of free portions widely separated, 

 free portions extremely slender, almost filiform and minutely pubescent 

 at their tips. 



